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DC Road Signs Practice study materials
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DC Road Signs Practice practice questions

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Question 1Regulatory Signs

A white rectangular sign with black lettering reads 'SPEED LIMIT 25'. What does this sign require of drivers on that road?

  1. Treat 25 mph as a suggestion that may be exceeded when passing
  2. Drive no faster than 25 mph unless conditions require a lower speed Correct answer.
  3. Reduce speed to 25 mph only when pedestrians are present
  4. Maintain exactly 25 mph in all weather and traffic

Explanation

A white regulatory speed limit sign sets the maximum lawful speed on that road. Drivers must stay at or below 25 mph, and may legally need to drive slower when weather, visibility, or traffic make the posted limit unsafe.

Question 2Regulatory Signs

You are driving on a road posted with a white sign reading 'SPEED LIMIT 55' when heavy fog reduces visibility sharply. What is the correct action?

  1. Continue at 55 mph because the posted limit authorizes it
  2. Stop in the travel lane until the fog lifts
  3. Slow below 55 mph to a speed safe for the reduced visibility Correct answer.
  4. Speed up to clear the foggy stretch more quickly

Explanation

The basic speed law requires drivers to travel at a speed reasonable for existing conditions, regardless of the posted maximum. Fog reduces sight distance, so the safe speed is below the posted limit.

Question 3Regulatory Signs

A red-and-white sign shows the word 'STOP' in white letters on a red octagon. Where must the vehicle come to a complete halt?

  1. At the marked stop line, or at the crosswalk or intersection edge if no line exists Correct answer.
  2. Only if another vehicle is approaching
  3. Anywhere within the intersection before proceeding
  4. At the signpost itself, regardless of the stop line

Explanation

A stop sign requires a full stop at the marked stop line. If no line is painted, the stop is made at the crosswalk, and if there is no crosswalk, at the edge of the intersecting roadway.

Question 4Regulatory Signs

A driver reaches a stop sign at an intersection where a painted stop line is visible but faded. What is the legally correct stopping point?

  1. Past the stop line so the front bumper enters the crosswalk
  2. At the faded stop line, before entering the crosswalk area Correct answer.
  3. At the center of the intersection for better visibility
  4. Several car lengths back from the sign to be safe

Explanation

A stop line remains the designated stopping point even when its paint has faded, and the driver must halt before it. Stopping behind the line keeps the crosswalk and intersection clear while the driver checks for traffic.

Question 5Regulatory Signs

A sign shows a black 'X' with the letters 'RR' on a yellow background. What does this warning tell the driver?

  1. A rest area is available at the next exit
  2. A railroad crossing is ahead, so slow down and be prepared to stop Correct answer.
  3. A reduced-speed school zone begins here
  4. The road surface is grooved for traction

Explanation

The round yellow railroad advance warning sign alerts drivers that tracks are ahead. Drivers should slow down, look and listen for trains, and never stop on the tracks.

Question 6Regulatory Signs

A white rectangular sign reads 'YIELD'. Approaching a merge point, what does this sign require?

  1. Come to a complete stop before merging in every case
  2. Sound the horn before entering the intersection
  3. Accelerate to merge ahead of the other vehicles
  4. Slow down and give the right of way to traffic on the intersecting road Correct answer.

Explanation

A yield sign requires the driver to slow down, check for approaching traffic, and let cross traffic proceed first. A full stop is needed only when traffic makes it necessary to avoid a collision.

Question 7Regulatory Signs

A driver approaches a yield sign at a freeway on-ramp with a clear gap in traffic. What is the proper action?

  1. Force the way in and expect ramp traffic to brake
  2. Slow to check traffic and merge when a safe gap exists Correct answer.
  3. Stop fully at the end of the ramp before accelerating
  4. Wait at the yield sign until no vehicle is visible for a mile

Explanation

At a yield sign the driver must let traffic on the through road go first, but may proceed without stopping when a safe gap is available. Stopping unnecessarily on an on-ramp can itself create a hazard.

Question 8Regulatory Signs

A red circle with a diagonal slash over a black left-turn arrow appears on a white sign. What does this sign indicate?

  1. Left turns must be made from the right lane
  2. A left-turn lane opens ahead
  3. Left turns are prohibited at this location Correct answer.
  4. Left turns are permitted only during green lights

Explanation

A red circle with a diagonal slash is the universal prohibition symbol, so the sign bans the maneuver shown. Here it means no left turn may be made at that intersection.

Question 9Regulatory Signs

A white sign shows a black U-shaped arrow with a red slash through it. What restriction does this place on the driver?

  1. No right turn on red
  2. No parking along the curb
  3. No lane changes for the next block
  4. No U-turn at this location Correct answer.

Explanation

The U-shaped arrow with a red slash is the no U-turn sign. It prohibits reversing direction at that point, typically because visibility or traffic flow makes the maneuver unsafe.

Question 10Regulatory Signs

A white sign reads 'NO RIGHT TURN ON RED'. A driver stopped at the red light wants to turn right onto a clear cross street. What must the driver do?

  1. Turn right only after honking to warn pedestrians
  2. Wait for the light to turn green before making the right turn Correct answer.
  3. Make the turn if no police officer is watching
  4. Turn right after slowing, since the cross street is clear

Explanation

The sign removes the usual permission to turn right after stopping at a red light. The driver must remain stopped and wait for a green signal before turning.

Question 11Regulatory Signs

A white sign displays the word 'ONE WAY' with a black arrow pointing left. What does this mean for traffic on that street?

  1. Traffic on that street moves only in the direction of the arrow Correct answer.
  2. Traffic may travel either direction but must yield to the left
  3. Drivers must turn left at the next intersection
  4. The left lane is reserved for buses only

Explanation

A one-way sign indicates that all traffic on that roadway travels in the direction shown by the arrow. Drivers must not enter against the arrow, which would mean driving into oncoming traffic.

Question 12Regulatory Signs

You are about to turn onto a street and see a 'ONE WAY' sign with the arrow pointing toward you. What should you do?

  1. Do not enter, because you would be driving against traffic Correct answer.
  2. Enter the street and drive toward the arrow
  3. Enter only if you intend to park immediately
  4. Enter after yielding to traffic coming from behind

Explanation

An arrow pointing toward your position means traffic on that street flows in your direction, so entering would put you head-on against other vehicles. You must choose a different route.

Question 13Regulatory Signs

A white sign reads 'DO NOT PASS'. What does this sign prohibit?

  1. Passing another vehicle in that zone Correct answer.
  2. Passing a school bus stopped in the lane
  3. Passing a slow-moving farm tractor only
  4. Passing a pedestrian in a crosswalk

Explanation

A do-not-pass sign establishes a no-passing zone where overtaking other vehicles is prohibited, usually because sight distance is limited. The restriction applies to passing any vehicle in that stretch.

Question 14Regulatory Signs

A driver on a two-lane road sees a 'DO NOT PASS' sign and a solid yellow line on their side, but the vehicle ahead is moving well below the limit. What is the correct action?

  1. Pass by using the shoulder to the right
  2. Pass anyway because the lead vehicle is slow
  3. Flash headlights until the lead vehicle speeds up
  4. Stay behind and wait until passing is legally permitted Correct answer.

Explanation

The no-passing zone and solid yellow line on the driver's side both prohibit overtaking, regardless of how slowly the lead vehicle travels. The driver must remain behind until the restriction ends.

Question 15Regulatory Signs

A white sign with black text reads 'KEEP RIGHT'. What does this sign direct a driver to do?

  1. Turn right at the next intersection
  2. Stay in the right-hand lane or pass to the right of the median Correct answer.
  3. Yield to traffic entering from the right
  4. Merge right only when a vehicle approaches

Explanation

A keep-right sign directs traffic to remain on the right side of a median, island, or obstacle. It is commonly placed where a divided road or raised island could tempt drivers to travel on the left.

Question 16Regulatory Signs

A white sign reads 'LEFT LANE MUST TURN LEFT'. A driver in that lane wants to continue straight. What must the driver do?

  1. Continue straight because the lane is not physically blocked
  2. Stop in the lane and wait for a gap to move over
  3. Follow the mandatory turn or change lanes before the intersection Correct answer.
  4. Proceed straight while signaling an intention to turn later

Explanation

A mandatory movement sign requires vehicles in the designated lane to make the indicated turn. A driver who wants to go straight must change out of that lane before reaching the intersection.

Question 17Regulatory Signs

A white sign with a black bicycle symbol and the word 'ONLY' is posted above the right lane. What does this sign mean?

  1. Bicycles may use all lanes on this road
  2. The marked lane is reserved for bicycle use Correct answer.
  3. Bicycles must dismount and walk on the sidewalk
  4. Motor vehicles may park in that lane

Explanation

A bicycle symbol with 'ONLY' designates a reserved bicycle lane. Motor vehicles may not travel or park in that lane, though they may cross it where turning is permitted.

Question 18Regulatory Signs

A white sign reads 'HOV 2+ ONLY 6 AM-9 AM'. What does this require of a driver using that lane during those hours?

  1. At least two occupants must be in the vehicle Correct answer.
  2. The vehicle must be electric or hybrid
  3. The vehicle must be a van or bus
  4. The driver must pay a toll to use the lane

Explanation

HOV 2+ means a high-occupancy vehicle lane requiring two or more people in the vehicle during the posted hours. Outside those hours the lane may be open to all traffic depending on local rules.

Question 19Regulatory Signs

A white sign reads 'NO PARKING ANY TIME'. What does this prohibit?

  1. Leaving a vehicle unattended at the curb for any duration Correct answer.
  2. Idling in the lane while waiting for a parking space
  3. Backing into a driveway across the curb
  4. Stopping briefly to let a passenger out

Explanation

A no parking any time sign means a vehicle may not be left at the curb at any hour. Brief stops to load or unload passengers may still be allowed unless stopping itself is prohibited.

Question 20Regulatory Signs

A white sign reads 'NO STANDING'. How does this differ from a 'NO PARKING' sign?

  1. No standing applies only to trucks and buses
  2. No standing bans waiting but allows a brief stop to load or unload Correct answer.
  3. No standing bans all vehicle presence, including stopping for passengers
  4. No standing applies only during posted rush hours

Explanation

Standing means waiting in a vehicle with the driver present, so a no standing sign bars that waiting while still permitting momentary stops to pick up or drop off passengers. No parking is more permissive because it allows standing and brief stops.

Question 21Regulatory Signs

A white sign shows a black arrow curving to the left with the word 'ONLY' beneath it. What does this sign require?

  1. Through traffic should merge left after the intersection
  2. All traffic in the lane must turn left Correct answer.
  3. Drivers must yield to left-turning traffic from the right
  4. Left turns are optional but recommended

Explanation

An arrow with the word 'ONLY' marks a mandatory turn lane, so every vehicle in that lane must make the indicated left turn. Drivers intending to continue straight must use a different lane.

Question 22Regulatory Signs

A white sign reads 'TRUCKS USE LOW GEAR' on a long downhill grade. What is the purpose of this instruction?

  1. To reduce engine noise in residential areas
  2. To reduce brake fade by using engine braking on the descent Correct answer.
  3. To prevent trucks from using the left lane
  4. To keep trucks from exceeding the posted speed limit by gearing up

Explanation

On steep downgrades, relying only on service brakes can overheat them and cause brake fade. Shifting to a low gear lets engine compression help control speed and preserves braking capacity.

Question 23Regulatory Signs

A white sign reads 'WEIGHT LIMIT 10 TONS'. Which vehicles does this restrict?

  1. Only commercial trucks carrying cargo
  2. Any vehicle whose total weight exceeds 10 tons Correct answer.
  3. Only vehicles that are exactly 10 tons
  4. Only vehicles towing a trailer

Explanation

A weight limit sign caps the total weight allowed on that road or bridge at the posted figure. Any vehicle exceeding 10 tons, whether a truck or a loaded passenger vehicle combination, is prohibited.

Question 24Regulatory Signs

A white sign reads 'RIGHT LANE ENDS MERGE LEFT'. What is the safest response when traffic is heavy?

  1. Maintain speed and force a gap in the left lane
  2. Stop in the ending lane and wait for the lane to clear
  3. Slow slightly, signal, and merge left when a gap opens Correct answer.
  4. Move onto the shoulder to continue past the merge

Explanation

When a lane ends, drivers should adjust speed, signal early, and merge into the continuing lane when a safe gap appears. Forcing a gap or driving on the shoulder creates conflict and crash risk.

Question 25Regulatory Signs

A white sign reads 'STOP HERE ON RED'. At an intersection with this sign, what must a driver do before turning right on red where turning is otherwise allowed?

  1. Slow down and roll through if the way is clear
  2. Stop only if a pedestrian is in the crosswalk
  3. Wait for a green arrow before turning
  4. Stop at the marked point and yield before proceeding Correct answer.

Explanation

The sign directs drivers to make the required red-light stop at the marked location before turning. After stopping, the driver must yield to pedestrians and cross traffic before completing the turn.

Question 26Regulatory Signs

A white rectangular sign reads 'SPEED LIMIT 45'. What does this sign establish for the road where it is posted?

  1. The maximum lawful speed under normal conditions Correct answer.
  2. A minimum speed that all traffic must maintain
  3. An advisory speed recommended for curves only
  4. A speed that applies only to commercial trucks

Explanation

A white regulatory speed limit sign sets the maximum lawful speed for that road under favorable conditions. Drivers may lawfully travel slower when conditions or caution require it, and exceeding the posted number is a violation.

Question 27Regulatory Signs

A white sign reads 'NO TURN ON RED'. A driver stopped at the red light wishes to turn right onto a clear street. What must the driver do?

  1. Turn right after a complete stop and yield
  2. Sound the horn and proceed when clear
  3. Wait for the light to turn green before turning Correct answer.
  4. Turn only after the crossing vehicle passes

Explanation

This sign removes the usual permission to turn right after stopping at a red light. The driver must remain stopped until the signal turns green, then turn when it is safe.

Question 28Regulatory Signs

A white sign reads 'NO U TURN'. What maneuver does this sign prohibit at that location?

  1. Crossing the centerline to enter a driveway
  2. Changing lanes across a broken white line
  3. Reversing direction within the roadway to travel the opposite way Correct answer.
  4. Backing into a parking space along the curb

Explanation

A U-turn is a reversal of direction within the roadway so the vehicle heads back the way it came. The sign forbids that maneuver at the posted location regardless of traffic conditions.

Question 29Regulatory Signs

A white sign displays the word 'STOP' in a red octagon. What must a driver do at the marked line?

  1. Slow to a rolling pace and continue if clear
  2. Bring the vehicle to a complete halt before proceeding Correct answer.
  3. Stop only when other traffic is present
  4. Yield to traffic from the right without stopping

Explanation

A stop sign requires a full cessation of movement at the stop line, crosswalk, or edge of the intersection. Rolling stops are unlawful even when the road appears clear.

Question 30Regulatory Signs

A white sign reads 'PEDESTRIAN CROSSING' beside a marked crosswalk. What does this sign require of a driver approaching it?

  1. Stop for at least three seconds before the crosswalk
  2. Yield to pedestrians in the crosswalk and be ready to stop Correct answer.
  3. Proceed at the posted speed if no one is visible
  4. Honk to warn pedestrians before continuing

Explanation

The sign alerts drivers to a marked crossing and reinforces the duty to yield to pedestrians using it. A driver must be prepared to stop rather than assume the way is clear.

Question 31Regulatory Signs

A white sign reads 'DO NOT ENTER' with a red circle. A driver sees it facing them at a ramp. What does this mean?

  1. The roadway ahead is reserved for buses only
  2. The roadway ahead requires a toll payment
  3. The roadway ahead is closed to traffic moving in this direction Correct answer.
  4. The roadway ahead is open but has no shoulder

Explanation

A 'DO NOT ENTER' sign marks a one-way roadway or ramp that traffic may not enter from this direction. Entering anyway means driving against the intended flow of traffic.

Question 32Regulatory Signs

A white sign reads 'NO PARKING 8 AM-10 AM MONDAY'. What does this mean for a driver on that street?

  1. Parking is prohibited all day every Monday
  2. Parking is allowed only during that window on Mondays
  3. Parking is prohibited during that window on Mondays Correct answer.
  4. Parking is prohibited for ten hours every Monday

Explanation

The sign limits the parking prohibition to the stated hours on the stated day. Outside that window, parking is governed by whatever other signs or rules apply.

Question 33Regulatory Signs

A white sign reads 'WRONG WAY' beside a red 'DO NOT ENTER' sign. A driver sees both facing them. What situation does this indicate?

  1. The driver is heading into a lane intended for oncoming traffic Correct answer.
  2. The driver is approaching a lane closed for construction
  3. The driver is entering a one-way street in the correct direction
  4. The driver is approaching a required detour

Explanation

A 'WRONG WAY' sign paired with 'DO NOT ENTER' warns that the driver is oriented against the designated direction of travel. The correct response is to stop and turn around safely.

Question 34Regulatory Signs

A white sign reads 'KEEP RIGHT OF MEDIAN'. A driver approaching the median must do what?

  1. Pass to the right side of the raised divider Correct answer.
  2. Stop before the divider and wait
  3. Treat the divider as a turn lane
  4. Cross to the left side of the divider

Explanation

The sign directs traffic to travel on the right-hand side of the physical divider. Passing on the wrong side would put the vehicle in opposing traffic.

Question 35Regulatory Signs

A white sign reads 'NO LEFT TURN 4 PM-6 PM'. A driver wants to turn left at 5 PM. What does the sign require?

  1. Continue straight or choose another route Correct answer.
  2. Turn left after yielding to oncoming traffic
  3. Turn left after stopping completely first
  4. Turn left only if a green arrow appears

Explanation

During the posted hours the left turn is prohibited outright, so yielding or waiting does not make it lawful. The driver must proceed straight or find a different route.

Question 36Regulatory Signs

A white sign reads 'CENTER LANE LEFT TURNS ONLY'. How may a driver lawfully use that center lane?

  1. As a staging lane for turning left into or out of driveways Correct answer.
  2. As a lane for making U-turns in either direction
  3. As a parking lane during off-peak hours
  4. As a through lane for passing slower traffic

Explanation

A center two-way left-turn lane exists to let vehicles decelerate for left turns without blocking through traffic. It is not a travel or passing lane.

Question 37Regulatory Signs

A white sign reads 'TRUCK ROUTE' with an arrow. What does this sign indicate to a truck driver?

  1. A lane reserved for trucks only
  2. A weigh station that all trucks must enter
  3. A designated path that trucks should follow through the area Correct answer.
  4. A road where trucks are prohibited

Explanation

Truck route signs guide heavy vehicles along streets suited to their size and weight. They help keep large trucks off roads not built for them.

Question 38Regulatory Signs

A white sign reads 'NO STOPPING' along a curb. How does this restrict a driver compared with 'NO PARKING'?

  1. The driver may stop only to load heavy cargo
  2. The driver may stop freely but not return within an hour
  3. The driver may pause briefly but not leave the vehicle
  4. The driver may not even pause to drop off a passenger Correct answer.

Explanation

'NO STOPPING' is stricter than 'NO PARKING' because it bars any halt, including brief ones for passengers. 'NO PARKING' still allows a temporary stop to load or unload.

Question 39Regulatory Signs

A white sign reads 'YIELD HERE TO PEDESTRIANS'. How does this differ from an ordinary pedestrian crossing sign?

  1. It permits drivers to proceed whenever pedestrians are on the far side
  2. It designates a crossing that is active only during school hours
  3. It marks a crossing where pedestrians must wait for vehicles
  4. It imposes an explicit duty to give way before entering the crossing Correct answer.

Explanation

The word 'YIELD' makes the duty to give way explicit rather than merely advisory. Drivers must let pedestrians cross before proceeding through that point.

Question 40Regulatory Signs

A white sign reads 'NO PARKING ON PAVEMENT'. What does this prohibit?

  1. Parking within marked spaces on the street
  2. Parking in a paved lot behind a business
  3. Leaving a vehicle on sidewalks, grass, or other unpaved surfaces Correct answer.
  4. Stopping briefly in a marked loading zone

Explanation

This sign bars drivers from leaving vehicles on sidewalks, lawns, or other surfaces not intended for parking. It protects pedestrians and prevents damage to landscaping.

Question 41Regulatory Signs

A white sign reads 'ALL TRAFFIC MUST TURN RIGHT'. A driver intending to go straight reaches the sign. What must the driver do?

  1. Turn right and find a legal route to the destination Correct answer.
  2. Continue straight because the destination lies ahead
  3. Reverse to the previous intersection and reroute
  4. Stop and wait for the sign to change

Explanation

A mandatory turn sign compels every vehicle to follow the indicated direction. The driver must turn right and then plan an alternate route from there.

Question 42Regulatory Signs

A white sign reads 'NO HITCHHIKING'. What activity does this sign prohibit?

  1. Towing a trailer behind a passenger car
  2. Riding a bicycle on the shoulder
  3. Soliciting rides from the roadside or roadway Correct answer.
  4. Carrying passengers for payment

Explanation

Hitchhiking means standing along the road to solicit a ride from passing drivers. The sign bans that activity because it creates a hazard near moving traffic.

Question 43Regulatory Signs

A white sign reads 'RIGHT TURN ONLY' at a signalized corner. A driver in the right lane wants to go straight. What is the correct action?

  1. Complete the right turn and reroute from the new street Correct answer.
  2. Proceed straight because through traffic has priority
  3. Wait in the lane until the signal allows straight travel
  4. Change lanes inside the intersection to go straight

Explanation

A right-turn-only sign makes the turn mandatory for vehicles in that lane. The driver must turn and then find a lawful route back to the intended destination.

Question 44Regulatory Signs

A white sign reads 'SPEED LIMIT 55 NIGHT 45'. How should a driver interpret this combined sign?

  1. The limit is 45 by day and 55 at night
  2. The limit is 55 by day and 45 during nighttime hours Correct answer.
  3. The limit is 55 at all times with a 45 advisory
  4. The limit is 45 only when the road is wet

Explanation

When a speed sign lists a daytime figure and a separate nighttime figure, each applies during its stated period. Night driving carries a lower limit because visibility is reduced.

Question 45Regulatory Signs

A white sign reads 'AXLE WEIGHT LIMIT 8 TONS'. Which vehicles does this restriction target?

  1. Vehicles whose weight on any single axle exceeds eight tons Correct answer.
  2. Vehicles towing any trailer at all
  3. Vehicles whose total loaded weight exceeds eight tons
  4. Vehicles carrying more than eight passengers

Explanation

An axle weight limit caps the load carried by any one axle rather than the vehicle's total weight. It protects pavement and bridges from concentrated loads.

Question 46Regulatory Signs

A white sign reads 'NO PARKING ANY TIME' but a driver needs to stop for two minutes to buy a paper. What is the lawful action?

  1. Stop in the lane while a passenger runs in
  2. Keep the vehicle moving and park elsewhere Correct answer.
  3. Leave the vehicle briefly with hazards flashing
  4. Park in the zone if no officer is present

Explanation

'ANY TIME' means the prohibition has no exceptions for quick errands, so the driver may not leave the vehicle there. Hazard lights do not create a parking privilege.

Question 47Regulatory Signs

A white sign reads 'LEFT LANE MUST TURN LEFT' while a second sign over the right lane shows a straight arrow. A driver in the left lane wants to go straight. What is the safest lawful action?

  1. Stop in the left lane until the right lane clears
  2. Turn left, then reroute to reach the destination Correct answer.
  3. Change to the right lane before the intersection if a gap allows
  4. Continue straight from the left lane while signaling

Explanation

The left lane is committed to the turn, so a driver who entered it must turn left and reroute. Changing lanes late to escape a turn-only lane risks a collision and may cross a solid line.

Question 48Regulatory Signs

A white sign reads 'NO RIGHT TURN ON RED EXCEPT FROM RIGHT LANE'. A driver in the center lane reaches a red light. What does the sign permit?

  1. A right turn after yielding but without stopping
  2. Nothing; the driver must wait for green before turning right Correct answer.
  3. A right turn after stopping, since the exception applies broadly
  4. A right turn only if a passenger guides the driver

Explanation

The exception is limited to vehicles in the designated right lane, so a driver in the center lane may not turn on red. That driver must wait for a green signal.

Question 49Regulatory Signs

A white sign reads 'STOP FOR SCHOOL BUS WHEN LIGHTS FLASH'. A driver on a divided highway meets a bus flashing red lights in the opposite direction across a median. What applies?

  1. The driver must slow to 15 mph and pass carefully
  2. The driver must stop in all cases until the lights stop
  3. The driver must stop only if children are visible
  4. The driver may continue because a physical median separates the directions Correct answer.

Explanation

Where opposing lanes are separated by a raised median or physical barrier, traffic on the other side is not required to stop for the bus. Drivers on the same side as the bus must still stop.

Question 50Regulatory Signs

A white sign reads 'NO PARKING 7 AM-9 AM AND 4 PM-6 PM EXCEPT SATURDAY AND SUNDAY'. When is parking prohibited?

  1. During those windows every day of the week
  2. Only on Saturday and Sunday during those windows
  3. During those two windows on weekdays only Correct answer.
  4. All day on weekdays and weekends

Explanation

The weekday exception removes Saturday and Sunday from the restriction, leaving the two rush-hour windows on Monday through Friday. The sign combines a time limit with a day exception.