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China bus Subject 1 foundations study materials
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China bus Subject 1 foundations practice questions

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Question 1Hazards Fitness

According to Article 62 of the Implementation Regulations of the Road Traffic Safety Law, what is the maximum continuous driving duration and minimum rest period permitted for motor vehicle drivers?

  1. Must not drive continuously for more than 6 hours; must stop and rest for at least 15 minutes
  2. Must not drive continuously for more than 4 hours; must stop and rest for at least 20 minutes Correct answer.
  3. Must not drive continuously for more than 5 hours; must stop and rest for at least 30 minutes
  4. Must not drive continuously for more than 3 hours; must stop and rest for at least 10 minutes

Explanation

Under Article 62 of the Regulations on the Implementation of the Road Traffic Safety Law, drivers are strictly prohibited from driving continuously for more than 4 hours without stopping for rest. When stopping for rest, the duration must not be less than 20 minutes.

Question 2Hazards Fitness

Outside of the designated operational hours indicated on a dedicated bus lane sign (e.g., during off-peak midday or late night), how is traffic permitted to use that lane?

  1. The lane is completely closed to all vehicular traffic including buses
  2. Only non-motorized bicycles and electric scooters may use the lane
  3. Only emergency ambulances may enter the lane at any time
  4. Other social motor vehicles are permitted to drive in the lane unless prohibited by other specific road signs Correct answer.

Explanation

When dedicated bus lanes specify active operational time windows (e.g., peak commuting hours), social motor vehicles may lawfully utilize the lane during non-operational off-peak periods, following general lane-use rules.

Question 3Hazards Fitness

Under Article 63 of the Implementation Regulations of the Road Traffic Safety Law, what is the statutory parking restriction distance for road sections near intersections, railway level crossings, sharp curves, and narrow roads?

  1. Within 30 meters, no stopping or parking is permitted
  2. Within 50 meters, no stopping or parking is permitted Correct answer.
  3. Within 20 meters, no stopping or parking is permitted
  4. Within 80 meters, no stopping or parking is permitted

Explanation

Under Article 63, Item 2 of the Implementation Regulations, no vehicle may stop or park on road sections within 50 meters of intersections, railway crossings, sharp turns, narrow roads, bridges, steep slopes, or tunnels.

Question 4Hazards Fitness

According to Article 81 of the Implementation Regulations of the Road Traffic Safety Law, when driving a passenger bus on an expressway in fog or heavy rain with visibility less than 200 meters (能见度小于200米), what are the speed and following distance rules?

  1. Speed must not exceed 80 km/h, and following distance must be at least 50 meters
  2. Turn on fog lights, low beams, clearance lamps, and front/rear position lamps; speed must not exceed 60 km/h, and following distance must be at least 100 meters Correct answer.
  3. Speed must not exceed 40 km/h, and following distance must be at least 30 meters
  4. Turn on high beams and maintain normal cruising speed of 100 km/h

Explanation

Under Article 81 of the Implementation Regulations, when visibility on an expressway is less than 200m, drivers must turn on fog lights, low beam, clearance lamps, and position lights, limit speed to not more than 60 km/h, and keep a following distance of at least 100 meters from the vehicle in front.

Question 5Hazards Fitness

Under Article 81 of the Implementation Regulations, when visibility on an expressway is reduced to less than 100 meters (能见度小于100米) due to dense fog or torrential rain, what statutory limits apply to a passenger bus?

  1. Speed must not exceed 60 km/h, and following distance must be at least 100 meters
  2. Speed must not exceed 20 km/h, and must stop immediately in the travel lane
  3. Turn on fog lights, low beams, clearance lamps, position lamps, and hazard flashers; speed must not exceed 40 km/h, and following distance must be at least 50 meters Correct answer.
  4. Maintain 50 km/h with high beams illuminated

Explanation

Under Article 81, when expressway visibility is less than 100 meters, drivers must activate fog lights, low beams, clearance lamps, position lights, and hazard warning flashers, maintain speed at or below 40 km/h, and maintain a vehicle distance of at least 50 meters.

Question 6Hazards Fitness

Under Article 81 of the Implementation Regulations, when expressway visibility drops to less than 50 meters (能见度小于50米), what mandatory action must a passenger bus driver take?

  1. Pull over onto the active travel lane, shut off all lights, and wait for daylight
  2. Speed up to 60 km/h to pass through the fog bank as quickly as possible
  3. Park on the center dividing median strip and sound the horn continuously
  4. Turn on fog lights, low beams, clearance lamps, position lamps, and hazard flashers; reduce speed to not more than 20 km/h, and exit the expressway at the nearest exit immediately Correct answer.

Explanation

Under Article 81 of the Implementation Regulations, when visibility is less than 50 meters, the driver must activate fog lights, low beams, clearance/position lights, and hazard flashers, limit speed to not more than 20 km/h, and leave the expressway via the nearest exit ramp immediately (从最近的出口尽快驶离高速公路).

Question 7Hazards Fitness

Under Article 46 of the Implementation Regulations, what is the statutory maximum speed limit for a passenger bus when entering/exiting non-motorized vehicle lanes, negotiating sharp curves, crossing railway tracks, or driving on ice/snow?

  1. 40 km/h
  2. 50 km/h
  3. 30 km/h Correct answer.
  4. 20 km/h

Explanation

Under Article 46 of the Implementation Regulations, motor vehicles must not exceed 30 km/h when: (1) entering/leaving non-motor lanes or passing through railway crossings, sharp curves, narrow roads, narrow bridges; (2) turning around, turning, or going down steep slopes; (3) in fog, rain, snow, or dust with visibility < 50m; (4) on icy or muddy roads; or (5) towing a disabled motor vehicle.

Question 8Hazards Fitness

What is 'Hydroplaning / Aquaplaning' (水滑现象) when a passenger bus drives on waterlogged expressways, and how should a driver handle it?

  1. The bus floats across deep rivers safely like a ferry
  2. The water activates automatic emergency brakes unexpectedly
  3. The driver must immediately slam on the brakes and violently swerve the wheel
  4. Tire treads fail to displace standing water, forming a dynamic water wedge that lifts tires off the pavement; the driver must hold the wheel straight, ease off the accelerator, and avoid sharp braking or steering until traction returns Correct answer.

Explanation

Hydroplaning occurs when water film pressure exceeds tire contact pressure, lifting the tires off the asphalt. Steering and braking are completely lost. The driver must keep the steering wheel steady, gently release the accelerator to bleed off speed, and avoid harsh braking or sudden turns which would cause violent spins once tires regain road contact.

Question 9Hazards Fitness

When driving a large high-profile passenger bus across long bridges, viaducts, or tunnel exits in high-wind conditions (横风), what hazard occurs and how should the driver respond?

  1. Accelerate to 100 km/h to slice through the crosswind faster
  2. Slam on the brakes and come to a complete stop in the center lane of the bridge
  3. Open all passenger side windows to let the wind blow through the bus
  4. Sudden lateral wind gusts (横风) can shove the high-sided bus sideways; the driver must firmly grip the steering wheel with both hands, reduce speed, and make slight steering corrections into the wind Correct answer.

Explanation

High-profile passenger buses have a large lateral surface area susceptible to strong crosswinds (横风), especially on bridges and upon exiting tunnels. Drivers must reduce speed in advance, hold the steering wheel firmly with both hands, anticipate wind buffeting, and make smooth, gentle steering corrections to maintain lane positioning.

Question 10Incident Environment

When a passenger coach is involved in a traffic accident on a public road, what is the driver's primary immediate statutory duty under Article 70 of the Road Traffic Safety Law?

  1. Immediately stop the vehicle, turn on hazard warning lights, protect the scene, swiftly rescue injured passengers, and report the accident to traffic police (122) Correct answer.
  2. Quickly drive the bus to the destination station before reporting the collision to the transport company
  3. Negotiate private cash compensation with other drivers involved before checking passenger safety
  4. Instruct all passengers to stay seated inside the bus on the active travel lane while arguing fault

Explanation

Under Article 70 of the Road Traffic Safety Law, when an accident occurs, the driver must immediately stop, turn on hazard flashers, protect the scene, actively rescue injured persons, report to the police immediately, and safely evacuate passengers away from active travel lanes.

Question 11Incident Environment

What is the traffic regulation regarding yellow grid line markings (黄色网状线) painted on the road surface outside bus terminals, fire stations, or major road junctions?

  1. Vehicles may park inside the yellow grid for up to 5 minutes to discharge passengers
  2. Only public buses may use the grid as a regular passenger boarding zone
  3. Vehicles must stop inside the yellow grid before turning right
  4. Vehicles are strictly prohibited from stopping or queuing inside the yellow grid area under any circumstances to prevent gridlock Correct answer.

Explanation

Under national standard GB 5768 and the Implementation Regulations, yellow grid lines indicate areas where all stopping and queueing is strictly prohibited. If traffic ahead is congested, drivers must wait outside the grid line area to ensure the junction remains clear.

Question 12Incident Environment

If an unruly passenger causes a disturbance, attempts to grab the steering wheel, or assaults the driver while the bus is in motion, what is the driver's standard emergency operating protocol?

  1. Keep calm, immediately release the throttle, safely brake and bring the bus to a complete stop at the roadside, apply the parking brake, activate hazard flashers, and call the police (110) immediately Correct answer.
  2. Continue driving at high speed while wrestling physically with the passenger
  3. Accelerate to the destination station without stopping
  4. Encourage other passengers to throw the unruly individual out of the moving bus window

Explanation

Under national Ministry of Transport and MPS passenger safety protocols (enshrined following high-profile transit incidents), drivers faced with passenger disturbances must prioritize overall vehicle safety: remain calm, safely bring the vehicle to an immediate controlled stop, secure the parking brake, open doors for evacuation if necessary, and dial 110.

Question 13China Road Framework

What is the legal meaning of a Dedicated Bus Lane sign (公交专用车道指示标志) displaying specific operational hours (e.g., 07:00–09:00, 17:00–19:00)?

  1. All vehicles may use the lane freely at all times provided they do not exceed 40 km/h
  2. During the specified time periods, the lane is reserved exclusively for public transit buses and designated passenger vehicles; other vehicles are prohibited from entering Correct answer.
  3. Only public buses may use the lane during nighttime, while private cars must use it during peak morning hours
  4. Freight trucks are granted priority in this lane during morning and evening rush hours

Explanation

Under national standard GB 5768 (Road Traffic Signs and Markings) and local traffic management regulations, a dedicated bus lane sign with time restrictions designates that lane exclusively for public transit buses during the stated peak hours. Non-transit motor vehicles are strictly prohibited from driving in the bus lane during those hours.

Question 14China Road Framework

According to Article 63 of the Implementation Regulations of the Road Traffic Safety Law, within what distance from a public bus stop (公共汽车站) are other vehicles strictly prohibited from stopping or parking?

  1. Within 30 meters Correct answer.
  2. Within 50 meters
  3. Within 10 meters
  4. Within 100 meters

Explanation

Under Article 63, Item 3 of the Implementation Regulations of the Road Traffic Safety Law, no vehicle is permitted to stop or park within 30 meters of a bus stop, first-aid station, gas station, or fire hydrant (except for the designated public transit vehicles using the bus stop).

Question 15China Road Framework

Under Article 78 of the Implementation Regulations of the Road Traffic Safety Law, what is the statutory minimum speed limit for any motor vehicle driving on an expressway under normal weather conditions?

  1. 60 km/h Correct answer.
  2. 50 km/h
  3. 70 km/h
  4. 80 km/h

Explanation

Under Article 78 of the Implementation Regulations, the minimum marked speed limit for any motor vehicle driving on an expressway is 60 km/h under normal driving conditions.

Question 16China Road Framework

Under Article 45 of the Implementation Regulations of the Road Traffic Safety Law, what is the maximum speed limit on an urban road with no central dividing line (没有道路中心线的城市道路)?

  1. 30 km/h Correct answer.
  2. 40 km/h
  3. 50 km/h
  4. 20 km/h

Explanation

Under Article 45, Item 1 of the Implementation Regulations, on roads without a central dividing line, the maximum speed limit is 30 km/h for urban roads (城市道路) and 40 km/h for highways/suburban roads (公路).

Question 17China Road Framework

Under Article 45 of the Implementation Regulations, what is the maximum speed limit on an urban road that has only one motor vehicle lane in each direction (同方向只有1条机动车道的城市道路)?

  1. 70 km/h
  2. 50 km/h Correct answer.
  3. 60 km/h
  4. 30 km/h

Explanation

Under Article 45, Item 2 of the Implementation Regulations, on roads with a central line and only one motor vehicle lane in each direction, the maximum speed limit is 50 km/h for urban roads (城市道路) and 70 km/h for highways (公路).

Question 18China Road Framework

Under Article 80 of the Implementation Regulations, when driving on an expressway at a speed exceeding 100 km/h under normal weather conditions, what is the statutory minimum vehicle following distance (车距)?

  1. At least 50 meters
  2. At least 30 meters
  3. At least 100 meters Correct answer.
  4. At least 150 meters

Explanation

Under Article 80 of the Implementation Regulations, when driving on an expressway at a speed of 100 km/h or more, the minimum following distance from the vehicle in front must not be less than 100 meters. If the speed is less than 100 km/h, the following distance must not be less than 50 meters.

Question 19China Road Framework

When approaching a Tidal Flow / Reversible Lane (潮汐车道) marked with overhead lane-control signals, what must a passenger bus driver do?

  1. Observe the overhead electronic lane signal: only enter the lane when a green downward arrow is displayed, and do not enter if a red cross is illuminated Correct answer.
  2. Enter the lane at any time because commercial passenger buses have priority in reversible lanes
  3. Only use the reversible lane between 22:00 and 06:00
  4. Sound the horn and drive in the lane regardless of overhead signals

Explanation

Under national traffic sign standards, reversible/tidal flow lanes change direction depending on peak traffic flows. Drivers must strictly obey overhead lane control signals: green arrow indicates the lane is open in their direction, while a red 'X' indicates the lane is closed to their direction.

Question 20China Road Framework

Under Article 46 of the Road Traffic Safety Law, what is the mandatory driving protocol for a passenger bus when crossing a railway level crossing (铁路道口)?

  1. Accelerate to maximum speed in top gear to cross the tracks as quickly as possible
  2. Shift into neutral and coast across the railway tracks to save fuel
  3. Slow down or stop before the crossing, look both ways, listen for train signals, select a low gear, and cross smoothly without shifting gears or stopping on the tracks (一停、二看、三通过) Correct answer.
  4. Overtake slower vehicles on the railway tracks to clear the crossing

Explanation

Article 46 of the Road Traffic Safety Law requires a driver at a railway level crossing to follow the crossing signal or the keeper's directions, and where there is neither, to slow down or stop and confirm it is safe before proceeding. Commercial passenger operating practice adds the familiar drill - stop, look, then cross (一停、二看、三通过) - selecting a low gear beforehand so the coach crosses at a steady pace without a gearchange that could stall it on the track. Overtaking at a crossing is separately banned by Article 43.

Question 21China Road Framework

When approaching a bus stop and observing pedestrians running across the road to catch the bus, what defensive driving action must the bus driver take?

  1. Anticipate pedestrian panic, immediately reduce speed, cover the brake pedal, maintain generous lateral clearance, and be prepared to stop Correct answer.
  2. Speed up and sound the horn continuously to beat the pedestrian to the stop
  3. Swerve into oncoming traffic lanes to bypass the running pedestrians
  4. Flash high beams and accelerate

Explanation

Pedestrians rushing to catch a bus often fixate solely on the arriving vehicle and fail to observe oncoming traffic. Drivers must practice defensive driving (防御性驾驶): slow down well in advance, hover the foot over the brake, and be prepared for pedestrians darting directly in front of the vehicle.

Question 22China Road Framework

How should a commercial bus driver respond when the Advanced Driver Assistance System triggers a Forward Collision Warning (FCW / 前向碰撞预警) or Lane Departure Warning (LDW / 车道偏离预警)?

  1. Deactivate the sensor unit with tape and ignore the warning sounds
  2. Slam on the brakes and make a sharp U-turn immediately
  3. Immediately focus visual attention on the road ahead, evaluate the hazard, check mirrors, and smoothly apply braking or steer back into the lane center Correct answer.
  4. Assume the system is malfunctioning and accelerate

Explanation

ADAS systems (FCW and LDW) provide early acoustic, visual, or haptic alerts to counter driver distraction. When an alert fires, the driver must immediately assess the forward traffic environment, regain proper lane tracking, and apply controlled braking if approaching a forward obstacle.

Question 23China Road Framework

Under Article 68 of the Road Traffic Safety Law, when a passenger bus breaks down on an expressway and cannot move, where must the Warning Triangle (三角警告牌) be placed behind the vehicle?

  1. 5 to 10 meters directly behind the rear bumper
  2. 50 meters behind on ordinary urban streets
  3. On top of the bus roof next to the air conditioner
  4. At least 150 meters behind the disabled vehicle in the direction of oncoming traffic, with the hazard warning flashers on Correct answer.

Explanation

Article 68 of the Road Traffic Safety Law and Article 60 of the Implementation Regulations require the hazard warning flashers to be switched on and the warning sign to be set out more than 150 metres behind the vehicle, on the side the traffic is coming from, when a breakdown occurs on an expressway. At night the clearance lamps and rear position lamps must be lit as well. On an ordinary road the sign goes 50 to 100 metres back. Setting it further out at night or in fog is sound practice, but 150 metres is the figure in the regulation.

Question 24Bus Passengers

Under Article 78 of the Implementation Regulations of the Road Traffic Safety Law, what is the statutory maximum speed limit for medium and large passenger buses (中型、大型载客汽车) on expressways?

  1. 120 km/h
  2. 110 km/h
  3. 100 km/h Correct answer.
  4. 80 km/h

Explanation

Under Article 78 of the Regulations on the Implementation of the Road Traffic Safety Law, while small passenger cars may drive up to 120 km/h on expressways, medium and large passenger vehicles (buses and coaches) and freight trucks must not exceed a maximum speed limit of 100 km/h.

Question 25Bus Passengers

According to safe passenger bus operating procedures, what is the mandatory safety rule when arriving at a passenger boarding/alighting station?

  1. Open the passenger doors while slowing down from 15 km/h to speed up boarding
  2. The bus must come to a complete standstill, with the parking brake applied, before opening the passenger doors (车未停稳，严禁开门) Correct answer.
  3. Open the rear door first while continuing to roll toward the curb
  4. Instruct passengers to jump off as soon as the bus enters the bus stop bay

Explanation

Under commercial passenger transport safety operating rules and GB 7258-2017, passenger doors must never be opened while the vehicle is in motion. The bus must be fully stopped and secured before the driver operates the door control switch to prevent passenger falls and serious crush injuries.

Question 26Bus Passengers

Before departing from a bus stop after passenger boarding and alighting, what must the driver verify regarding the passenger doors?

  1. Start accelerating immediately while the doors are pneumatically closing to save time
  2. Rely solely on passengers to shout if their limbs are caught in the door
  3. Verify via the interior mirror and door indicator lights that all passenger doors are fully closed and no passenger clothing or bags are trapped, before starting to move (车门未关好，严禁起步) Correct answer.
  4. Keep the front door open for fresh air circulation while driving

Explanation

Drivers must verify that both front and rear passenger doors are fully closed and latched, scan the interior mirror and door step cameras to ensure no passenger clothing, limbs, or backpacks are caught in the door seals, and confirm dashboard door indicator lights are extinguished before releasing the brake and moving off.

Question 27Bus Passengers

What is the correct visual mirror scanning routine a bus driver must perform when preparing to pull away from a curb-side bus stop?

  1. Look only at the left side mirror and accelerate aggressively into the main traffic stream
  2. Sound the horn loudly and pull out without checking the right side mirror
  3. Look only at the speedometer while pulling away
  4. Check the interior passenger cabin mirror, check the right exterior mirror for trailing pedestrians/bicycles, check the left exterior mirror for passing traffic, activate the left turn signal, and pull out smoothly Correct answer.

Explanation

A complete passenger bus departure scan requires: (1) interior mirror to verify passenger seating/stability, (2) right side convex/down-view mirrors to ensure no alighting pedestrians or bicycles are alongside, (3) left side mirror and blind spot check for oncoming traffic, (4) activating the left turn signal at least 3 seconds prior to pulling out smoothly.

Question 28Bus Passengers

High-floor large passenger buses have a significant Front Lower Blind Spot (前下视盲区) directly below the windshield. How should a driver monitor this blind area before moving forward?

  1. Check the front curb-view convex mirror (前下视镜) and wide-angle front camera to verify no children or pedestrians are directly in front of the bumper Correct answer.
  2. Honk the horn twice and immediately accelerate forward without looking
  3. Lean out of the left window to guess the clearance
  4. Rely solely on standard interior rear-view mirrors

Explanation

Due to high driver seating positions in large buses, the area directly beneath the windshield and front bumper cannot be seen directly through the windshield. Drivers must inspect the dedicated front curb-view convex mirror (前下视镜) and auxiliary front monitor before moving forward to prevent running over pedestrians or children.

Question 29Bus Passengers

What is the 'Inner Wheel Difference' (内轮差) when a long passenger bus turns at an intersection, and what hazard does it create?

  1. The front inner wheel turns faster than the outer wheel, causing the vehicle to slide outward
  2. The rear inner wheel tracks significantly inside the trajectory of the front inner wheel, creating a dangerous sweeping blind area that can crush pedestrians and cyclists on the inside of the turn Correct answer.
  3. The difference in air pressure between the left and right tires during a turn
  4. The difference in braking distance between front disc brakes and rear drum brakes

Explanation

The inner wheel difference (内轮差) is the radial offset between the turning path of the front steering wheel and the rear axle wheels. In long-wheelbase vehicles (such as 10-12m buses), the rear wheels cut significantly inside the front wheel path (creating a 'death zone' / 盲区危险区). Drivers must take a wider turn, reduce speed, and scan the right convex mirror to protect vulnerable road users.

Question 30Bus Passengers

Why must passenger bus drivers avoid sudden, harsh emergency braking (急刹车) during routine urban driving, and what technique should be used?

  1. Sudden braking causes excessive fuel evaporation in the tank
  2. Sudden braking disables the vehicle power steering immediately
  3. Sudden braking is permitted freely because modern buses have automatic passenger restraints
  4. Sudden braking causes standing passengers and unbelted seated passengers to lose balance and suffer fall injuries; drivers should use anticipatory, progressive, two-stage braking (预见性制动与平稳减速) Correct answer.

Explanation

Large passenger buses carry standing and seated passengers vulnerable to severe inertia forces. Abrupt braking causes passenger falls, fractures, and head injuries. Professional drivers must practice defensive driving, maintain adequate following distance, anticipate traffic hazards, and apply smooth, progressive two-stage braking.

Question 31Bus Passengers

When driving a large passenger coach down a continuous, long, steep downhill mountain road (连续长下坡), what is the correct and safe braking method?

  1. Shift into a low gear, utilize engine compression braking and the auxiliary retarder (缓速器), and avoid prolonged continuous application of the service foot brake Correct answer.
  2. Shift into neutral and rely exclusively on continuous light pressure on the foot brake pedal
  3. Turn off the engine ignition to use engine drag while coasting in gear
  4. Rely entirely on pulling the emergency parking handbrake repeatedly

Explanation

On long downhill grades, relying continuously on the service friction foot brakes causes severe brake overheating, thermal fade, and catastrophic loss of braking. Drivers must engage low gear to harness engine compression braking combined with hydraulic/electromagnetic retarders (缓速器), applying the foot brake only for intermittent speed adjustments.

Question 32Bus Passengers

How does an auxiliary retarder (缓速器 - hydraulic or electromagnetic) assist a passenger coach, and what is its primary operational limitation?

  1. It acts as an automatic steering device on icy roads
  2. It provides auxiliary acceleration during uphill hill climbing
  3. It provides continuous contactless auxiliary braking during high and medium speed cruising without wearing friction linings, but cannot bring the vehicle to a complete dead stop or replace the parking brake Correct answer.
  4. It replaces the pneumatic service brake for emergency crash stops

Explanation

A retarder (hydraulic or eddy-current electromagnetic) generates contactless braking torque on the driveline, dissipating kinetic energy as heat without wearing service brake shoes. However, braking effectiveness diminishes at very low speeds (<10-15 km/h), so it cannot hold a stationary vehicle or replace mechanical parking and emergency service brakes.

Question 33Bus Passengers

What is the statutory duty of a long-distance passenger coach driver regarding passenger seat belts before departing from a station?

  1. Only ensure the front passenger seat belt is fastened, while leaving other passengers unmonitored
  2. Broadcast a safety announcement reminding all passengers to fasten their seat belts, visually inspect that passengers have fastened them, and refuse to depart until all passengers are buckled (全员全程系安全带) Correct answer.
  3. Seat belts are optional for passengers and the driver has no reminder obligation
  4. Advise passengers to unfasten seat belts to sleep comfortably on the expressway

Explanation

Under national road transport safety regulations and the Road Traffic Safety Law, drivers and station personnel must enforce 'Full journey, all passengers fastened' (全员全程系好安全带). Drivers must broadcast reminders, conduct cabin visual checks, and ensure every passenger is properly buckled before starting the journey.

Question 34Bus Passengers

What is the function and operating procedure of the Emergency Door Release Valve (应急放气阀 / 门应急阀) located near passenger doors inside and outside a bus?

  1. It discharges fire extinguishing gas into the passenger cabin
  2. It rapidly inflates the emergency escape slide like an aircraft
  3. In emergencies or electrical/pneumatic power loss, rotating the valve vents compressed air from the door cylinders, allowing the passenger doors to be pushed open manually Correct answer.
  4. It automatically refills the engine coolant

Explanation

Under GB 7258-2017 standards, all power-operated passenger doors must have emergency manual release valves located near the doors inside and outside the bus. Turning or pulling the valve vents the pneumatic air pressure holding the doors shut, enabling passengers or rescue personnel to push the doors open manually.

Question 35Bus Passengers

How does the Pneumatic Passenger Door Anti-Pinch System (车门防夹装置) function on modern public buses under GB 7258-2017?

  1. If an obstruction (such as a passenger arm, bag, or person) is encountered while the doors are closing, the system detects pressure resistance and automatically re-opens the doors or releases clamping force Correct answer.
  2. It cuts off the electrical power to the engine completely
  3. It activates the horn and locks the passenger in place tightly
  4. It triggers the roof emergency escape hatch to fly off

Explanation

Under GB 7258-2017, passenger doors must feature anti-pinch safety mechanisms (sensitized rubber edges or pneumatic pressure differential sensors). When resistance is detected during closing, the pneumatic valve automatically reverses door movement to release the trapped passenger and prevent injury.

Question 36Bus Passengers

Where should a safety hammer (安全锤) strike a tempered side window (钢化玻璃) of a passenger bus during an emergency evacuation?

  1. Strike repeatedly at the exact dead center of the glass
  2. Strike sharply at the four corners or edges of the window glass Correct answer.
  3. Strike the rubber weatherstrip only
  4. Use the hammer to pry open the floor panels

Explanation

Tempered safety glass is strongest at its geometric center but highly vulnerable to high point-pressure at its four corners and edges. Striking the corners with the pointed tungsten-carbide tip of the safety hammer shatters the glass instantly into dull, non-cutting granules for safe egress.

Question 37Bus Passengers

How does an Automatic Engine Compartment Fire Extinguishing Device (发动机舱自动灭火装置) operate under GB 7258-2017?

  1. It sprays water into the engine intake manifold to flood the cylinders
  2. Thermal/flame sensors in the engine bay detect abnormal heat or fire, sounding a cabin alarm and automatically discharging extinguishing agent (aerosol or dry powder) directly onto the engine bay Correct answer.
  3. It ejects the engine out of the back of the bus
  4. It requires the driver to pour liquid nitrogen through the dashboard

Explanation

Under GB 7258-2017, passenger buses with rear-mounted engines must be equipped with an automatic engine compartment fire suppression system. Heat-sensing cords or thermal detectors trigger an acoustic-optic alarm on the dashboard and deploy pressurized extinguishing agent within seconds to smother engine fires in their initial stage.

Question 38Bus Passengers

How does the Anti-Lock Braking System (ABS / 防抱死制动系统) assist the driver during emergency braking, and what indicates an ABS malfunction on the dashboard?

  1. It prevents wheels from locking up to maintain directional steering control during hard braking; an amber 'ABS' warning light remaining illuminated after self-test indicates a system fault Correct answer.
  2. It stops the vehicle in zero meters distance without any braking distance
  3. It locks all wheels permanently to skid into a stop
  4. The ABS warning light flashing green indicates the brake lines are disconnected

Explanation

ABS prevents wheels from locking during emergency braking, preserving steering control and reducing stopping distance on most surfaces. When the ignition is turned on, the yellow/amber 'ABS' light illuminates for a self-check and should extinguish; if it remains on while driving, the ABS system has a fault (standard friction braking remains functional).

Question 39Bus Passengers

While driving a passenger bus, the Low Brake Air Pressure Warning Buzzer sounds and the red warning light illuminates. What must the driver do immediately?

  1. Ignore the buzzer and continue driving at high speed to the next station
  2. Pump the foot brake pedal rapidly 50 times while accelerating
  3. Safely steer the bus to the side of the road, stop immediately before air pressure drops completely, apply the parking brake, and investigate pneumatic leakages Correct answer.
  4. Turn off the dashboard master switch to silence the buzzer

Explanation

A low brake air pressure alarm (< 0.45–0.50 MPa) warns that compressed air is leaking rapidly. The driver must immediately pull over safely while residual air is still available to actuate the brakes. If pressure drops further, spring brakes will lock up abruptly or service brakes will fail.

Question 40Bus Passengers

Under GB 7258-2017, how must Emergency Exit Signs (安全出口标志) and emergency lighting be maintained inside a passenger coach?

  1. Signs should be covered with advertising posters during daytime
  2. Emergency exit signs above doors, escape windows, and roof hatches must have photoluminescent or powered illumination visible in total darkness to guide passenger escape Correct answer.
  3. Emergency exit signs are only required on the driver's exterior door
  4. Exit signs may be replaced with decorative stickers of any design

Explanation

Under GB 7258-2017, all designated emergency exits (doors, window glass, roof escape hatches) must have standardized, luminous, photoluminescent, or battery-backed illuminated green 'Emergency Exit' (安全出口) signs clearly visible under low-light or smoke conditions.

Question 41Bus Passengers

During rainy or cold winter weather, how should the bus driver operate the vehicle ventilation/defrosting system (除霜除雾系统) to eliminate windshield condensation rapidly?

  1. Turn on the front windshield defroster (A/C dehumidification mode) with external air intake, directing dry warm/cool airflow across the inner glass surface Correct answer.
  2. Wipe the windshield vigorously with a dirty towel while driving at 80 km/h
  3. Turn off all blowers and close all cabin vents completely
  4. Spray soapy water onto the exterior windshield while in motion

Explanation

Windshield fogging is caused by warm, moist cabin air condensing on cold glass. Activating the vehicle A/C compressor in defrost mode dehumidifies incoming air and blows it across the glass, clearing condensation within seconds while maintaining driver concentration.

Question 42Bus Passengers

What is the primary function of the Driver Status Monitoring (DSM / 驾驶员行为监测系统) camera mounted on the dashboard facing the bus driver?

  1. To take portrait photos of passengers boarding the bus
  2. To detect driver fatigue (such as frequent yawning or prolonged eye closure) and distraction (such as looking down at phones or smoking), emitting audible alerts and reporting to the fleet safety platform Correct answer.
  3. To measure the vehicle tire pressure automatically
  4. To scan driver fingerprint to start the engine

Explanation

DSM (Driver Status Monitoring) cameras utilize computer vision algorithms to track driver facial features, eye blinks, gaze direction, and yawning. When signs of fatigue or distraction (such as phone use) are detected, the system triggers in-cabin voice alerts and uploads violation logs to the transport enterprise dynamic supervision center.

Question 43Bus Passengers

Under Chinese passenger transport safety regulations, what are the statutory passenger capacity rules regarding standing passengers (站立乘客) on highway express passenger coaches (公路客运车辆)?

  1. Standing passengers are permitted up to 20% of seating capacity
  2. Standing passengers are permitted provided they hold onto seat headrests
  3. Standing passengers are allowed on expressways during holiday travel rush (春运)
  4. Highway express coaches and tourist passenger buses are strictly prohibited from carrying any standing passengers; total passenger headcount must never exceed certified seated capacity (严禁站人) Correct answer.

Explanation

Under the Road Traffic Safety Law and transport regulations, highway passenger coaches (公路客车) and tourist chartered coaches (旅游客车) are certified strictly by seating capacity. Carrying standing passengers is strictly prohibited (0 standing passengers allowed); any excess person constitutes illegal passenger overloading (超员).

Question 44Bus Passengers

According to the Regulations on the Administration of Road Passenger Transport and Stations, what types of items are strictly prohibited from being carried into passenger cabins or stored in luggage holds (严禁携带进站上车)?

  1. Standard passenger personal clothing and sealed non-alcoholic beverages
  2. Flammable, explosive, toxic, corrosive, radioactive hazardous materials, fireworks, controlled knives, and uninspected hazardous chemicals Correct answer.
  3. Wheelchairs and baby strollers
  4. Laptops and mobile phones with certified internal batteries

Explanation

Under Ministry of Transport safety regulations, passengers are strictly prohibited from carrying dangerous goods (flammables, explosives, fireworks, compressed gas canisters, corrosives, toxins, radioactive materials, controlled knives) onto passenger buses or into luggage holds. Drivers and station staff must enforce baggage security screening.

Question 45Bus Passengers

What is the correct procedure for loading and distributing passenger baggage inside the underfloor Luggage Compartments (行李舱) of a commercial coach?

  1. Stack all heavy luggage exclusively on the right rear corner to tilt the vehicle
  2. Fill the driver's footwell area with oversized baggage
  3. Heavier luggage must be placed low, centered, and balanced evenly between left and right compartments; all items must be secured to prevent shifting during transit Correct answer.
  4. Place explosive fireworks in the center of the luggage bay

Explanation

Proper luggage hold loading maintains vehicle center of gravity and lateral stability: heavy bags must be placed flat on the floor near the center of the chassis, distributed evenly between left and right bays to prevent listing, and secured so cargo cannot shift and destabilize the coach during cornering or braking.

Question 46Bus Passengers

Under the real-name ticketing and passenger management system (实名制客运管理规定), what is the verification duty for long-distance intercity passenger bus services?

  1. Tickets may be transferred anonymously to any random passenger without verification
  2. Drivers are prohibited from looking at passenger tickets
  3. Only foreign tourists require identity checks
  4. Station staff and drivers must verify that passenger identity documents match the name and ticket details, ensuring 'ticket, person, and ID' consistency (票、人、证一致) Correct answer.

Explanation

Under Ministry of Transport regulations, long-distance interprovincial and intercity bus routes enforce real-name ticketing management (实名制管理). Before boarding, passenger tickets must be matched against valid national ID cards or passports to ensure 'ticket, person, and identification' correspond.

Question 47Bus Passengers

According to the Road Traffic Safety Law, what is the driver's responsibility regarding passenger safety and the use of seat belts on highway passenger coaches?

  1. The driver only needs to worry about their own seat belt and may ignore passengers
  2. The driver must remind and ensure that all passengers have their seat belts fastened before driving, and periodically check compliance throughout the journey Correct answer.
  3. Seat belts are only required if the vehicle is traveling over 100 km/h
  4. Passengers under 18 years of age are prohibited from wearing seat belts

Explanation

Under Article 51 of the Road Traffic Safety Law and Ministry of Transport guidelines, commercial passenger drivers are legally responsible for ensuring that all passengers buckle their seat belts before departure and keep them fastened throughout the entire trip.

Question 48Bus Passengers

When a passenger bus catches fire while driving on a highway, what is the sequential order of emergency actions the driver must execute?

  1. 1. Call the insurance company; 2. Continue driving to a repair shop; 3. Close all doors tightly
  2. 1. Lock all doors; 2. Run away alone without alerting passengers; 3. Take photos for social media
  3. 1. Jump out of the moving vehicle; 2. Throw water onto the battery pack while driving
  4. 1. Safely stop the vehicle and set the parking brake; 2. Open all doors and emergency release valves immediately; 3. Evacuate passengers to an upwind safe location; 4. Call 119/122 and fight the fire with extinguishers if safe to do so Correct answer.

Explanation

During a bus fire, life safety is paramount. The driver must immediately stop the vehicle away from fuel stations or bridges, engage the parking brake, open all doors and emergency exits, direct passengers to evacuate upwind (远离火源、逆风疏散), dial 119/122, and utilize onboard fire extinguishers if the fire is in its incipient stage.

Question 49Bus Passengers

According to Article 51 of the Road Traffic Safety Law of the PRC and safety standards for passenger vehicles (GB 7258-2017), what is the mandatory pre-departure safety duty of a commercial passenger bus driver regarding seatbelts?

  1. The driver must remind and ensure that all passengers have fastened their seatbelts before moving the vehicle and maintain reminders throughout the journey Correct answer.
  2. The driver only needs to remind passengers sitting in the front row and seats next to emergency exits to wear seatbelts
  3. The driver is only required to broadcast a seatbelt reminder when entering expressways or mountain roads
  4. The driver does not need to verify seatbelts if the bus is equipped with passenger airbags

Explanation

Under Article 51 of the Road Traffic Safety Law and Ministry of Transport passenger transport regulations, commercial bus drivers are legally obligated to implement the 'full journey, all passengers' (全程全员) seatbelt protocol. The driver must inspect and verbally remind all passengers to properly fasten seatbelts before departing the station or bus bay and reiterate the rule throughout transit. Airbags and seat positions do not exempt any passenger from wearing safety belts.

Question 50Bus Passengers

According to Article 62 of the Regulations for the Implementation of the Road Traffic Safety Law of the PRC, which of the following rules strictly applies to passenger vehicle doors during transit?

  1. Doors may remain slightly ajar on hot summer days if the air conditioning is insufficient
  2. Vehicles must not be moved or driven if passenger doors are not completely closed (车门未关好不准起步) Correct answer.
  3. Rear exit doors may be opened in advance while gliding into a bus stop to speed up passenger turnaround
  4. The driver may allow passengers to push open pneumatic doors while slowing down at red traffic lights

Explanation

Article 62(1) of the Road Traffic Safety Law Implementation Regulations explicitly prohibits drivers from moving or operating a motor vehicle when doors or compartments are not fully closed ('车门、车厢没有关好时，不准起步和行驶'). Opening passenger doors before the bus has come to a complete standstill frequently leads to fatal fall accidents.