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Ohio CDL Tanker Test study materials
Ohio CDL Tanker Test study resources

Ohio CDL Tanker Test practice questions

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Question 1Tank vehicle inspection and safety

Before loading a tank vehicle, which document tells you the maximum amount of product the tank is designed to hold and the tank's rated capacity?

  1. The shipping paper for the load
  2. The driver's bill of lading copy
  3. The vehicle registration card
  4. The tank's specification plate or certification Correct answer.

Explanation

Federal rules require a tank to be marked with a specification plate or certification that shows its design and rated capacity. Drivers use this to confirm the tank is rated for the product and to avoid overfilling. The shipping paper, bill of lading, and registration do not state the tank's rated capacity.

Question 2Tank vehicle inspection and safety

Why must a tank vehicle be inspected for leaks at the dome cover or manhole gasket before loading?

  1. Leaking gaskets reduce the vehicle's gross weight
  2. A leaking gasket can allow product or vapor to escape during transport Correct answer.
  3. The gasket must be removed before every trip
  4. The dome cover must be left open to vent pressure

Explanation

The dome cover and its gasket seal the tank opening; a damaged or loose gasket lets liquid or vapor escape in transit. Leaks create fire, spill, and exposure hazards and can violate hazmat rules. The cover is closed and secured for travel, not left open.

Question 3Tank vehicle inspection and safety

A tank vehicle carrying a flammable liquid is being driven on a highway. What does the term 'surge' refer to in this context?

  1. The vapor recovery flow at the loading rack
  2. The rise in tire temperature during a long trip
  3. The pressure rise inside the tank as product warms
  4. The movement of liquid inside a partly filled tank as the vehicle changes speed Correct answer.

Explanation

Surge is the front-to-back and side-to-side motion of liquid in a partially filled tank. It shifts weight onto axles and can push the vehicle, making braking and steering harder. Surge is a handling concern, not a pressure or vapor-recovery term.

Question 4Tank vehicle inspection and safety

What is the primary reason tank vehicles have a lower center of gravity concern and require slower speeds on curves?

  1. The tank is taller and heavier when loaded, so the vehicle tips more easily Correct answer.
  2. The tank has no brakes on the trailer axles
  3. Tank vehicles are exempt from rollover physics
  4. The product is always lighter than the tank shell

Explanation

A loaded tank carries a large mass high above the road, raising the center of gravity and increasing rollover risk in curves. Drivers must slow down and avoid abrupt steering. Tank vehicles are not exempt from rollover physics and do have trailer brakes.

Question 5Tank vehicle inspection and safety

During a pre-trip inspection of a tank vehicle, you check the emergency shutoff valves. What is their purpose?

  1. To vent vapor from the tank
  2. To stop the flow of product in an emergency Correct answer.
  3. To increase the flow rate during unloading
  4. To measure the product temperature

Explanation

Emergency shutoff valves let the driver or attendant stop product flow quickly if a hose ruptures or a leak occurs. They are a safety device, not a flow booster or vent. Temperature measurement is done with separate gauges.

Question 6Tank vehicle inspection and safety

What should you do if you discover a tank vehicle's discharge hose is cracked before unloading?

  1. Unload at a reduced rate to limit leakage
  2. Do not unload until the hose is replaced or repaired Correct answer.
  3. Wrap the crack with tape and proceed slowly
  4. Reverse the hose direction to bypass the crack

Explanation

A cracked discharge hose can burst under pressure and release product, so it must be taken out of service until repaired or replaced. Taping or slowing the rate does not make a damaged hose safe. Reversing flow does not remove the defect.

Question 7Tank vehicle inspection and safety

Which condition most directly increases the risk of a rollover when driving a partly filled tanker?

  1. A full tank with no free surface
  2. A partly filled tank that allows liquid to surge Correct answer.
  3. A tank with all compartments equally loaded
  4. A tank with the product at ambient temperature

Explanation

A partly filled tank allows free liquid movement, and surge can shift weight and destabilize the vehicle in turns. Full or evenly loaded compartments reduce free-surface movement. Ambient temperature is not the key factor in this handling risk.

Question 8Tank vehicle inspection and safety

When inspecting a tank vehicle, you notice the placards are missing for a hazardous material load. What is the correct action?

  1. Cover the hazard class with a blank placard
  2. Proceed because placards are only required for rail cars
  3. Install the required placards before the vehicle moves Correct answer.
  4. Ask the shipper to remove the hazard class from the shipping paper

Explanation

Placards communicate the hazard to emergency responders and the public and are required for regulated hazardous materials in the quantities that trigger placarding. The vehicle should not move until the correct placards are displayed. Blank placards or altered papers do not satisfy the rule.

Question 9Tank vehicle inspection and safety

A tank vehicle has multiple compartments. Why is it important to know which compartment is loaded with which product?

  1. To calculate the total vehicle weight only
  2. To decide which placard color to paint on the tank
  3. To set the radio frequency for the terminal
  4. To prevent mixing incompatible products and to manage weight distribution Correct answer.

Explanation

Compartment loading determines both compatibility and weight distribution. Mixing incompatible products can cause a dangerous reaction, and uneven loading affects handling. Placard color is not chosen by the driver, and weight is only part of the reason.

Question 10Tank vehicle inspection and safety

While driving a tanker, you must make a quick stop. How does liquid surge affect braking?

  1. It reduces stopping distance because the liquid pushes down
  2. It can push the vehicle forward and increase stopping distance Correct answer.
  3. It automatically applies the trailer brakes
  4. It has no effect on braking

Explanation

When you brake, the liquid surges forward and can push the vehicle, increasing stopping distance and making the stop harder to control. Surge does not improve braking and does not apply brakes automatically. Drivers should allow extra following distance and brake smoothly.

Question 11Tank vehicle inspection and safety

What is the correct procedure for checking the tank's internal valves and piping before loading?

  1. Remove the valve handles to save weight
  2. Verify valves are closed and secured, and check for leaks at fittings Correct answer.
  3. Test valves only after the vehicle is moving
  4. Open all valves fully and leave them open during transport

Explanation

Before loading and transport, valves must be in the correct position and secured, and fittings should be checked for leaks. Leaving valves open risks unintended release. Valve handles should remain in place for emergency use, and checks must happen before movement.

Question 12Tank vehicle inspection and safety

A driver is preparing to unload at a terminal. Which step best reduces the risk of a static electricity ignition?

  1. Bond the vehicle to the terminal grounding point before transferring product Correct answer.
  2. Keep the dome covers open for ventilation
  3. Increase the pump speed to shorten transfer time
  4. Disconnect the grounding cable to avoid sparks

Explanation

Bonding and grounding the vehicle before transfer drains static charge safely to earth and prevents a spark near flammable vapor. Faster pumping can increase static generation, and open domes release vapor. The grounding cable must be connected, not removed.

Question 13Tank vehicle inspection and safety

Which statement best describes the purpose of a tank vehicle's vapor recovery system?

  1. It captures vapors displaced during loading to prevent release to the atmosphere Correct answer.
  2. It increases the tank's pressure rating
  3. It filters liquid product before delivery
  4. It cools the product to reduce its volume

Explanation

Vapor recovery captures the vapors pushed out of the tank as product fills it, returning them to the terminal instead of releasing them. This reduces fire, health, and environmental hazards. It does not cool product, raise pressure ratings, or filter liquid.

Question 14Tank vehicle inspection and safety

You are driving a tanker and notice the vehicle beginning to sway after a lane change. What is the safest immediate response?

  1. Accelerate hard to pull the vehicle straight
  2. Brake hard and turn away from the sway
  3. Release the steering wheel briefly
  4. Steer smoothly and reduce speed gradually Correct answer.

Explanation

Liquid surge can cause sway after a steering input. The safest response is smooth, gentle steering and a gradual reduction in speed so the liquid settles. Hard acceleration, hard braking, or abrupt steering can worsen the sway and lead to rollover.

Question 15Tank vehicle inspection and safety

Which item is most important to check on a tank vehicle's tires before a long trip with a heavy liquid load?

  1. The number of lug nuts painted on the rim
  2. The tread depth, inflation pressure, and signs of damage Correct answer.
  3. The tire brand name
  4. The color of the valve caps

Explanation

Heavy liquid loads stress tires, so tread depth, correct inflation, and damage such as cuts or bulges must be checked. Underinflation can cause heat buildup and blowouts. Brand, valve cap color, and painted markings do not indicate tire safety.

Question 16Tank vehicle inspection and safety

A tank vehicle is placarded for a flammable liquid. Which placard placement is required?

  1. Only on the driver's side door
  2. On both sides and the rear of the vehicle Correct answer.
  3. Only on the front bumper
  4. Inside the cab on the dashboard

Explanation

Hazard placards must be displayed so they are visible from the front, both sides, and rear as required, typically on both sides and the rear. Placards on one door, the bumper only, or inside the cab would not meet visibility requirements.

Question 17Tank vehicle inspection and safety

What is the main hazard of overfilling a tank compartment?

  1. It improves handling by eliminating surge
  2. It reduces the vehicle's weight
  3. It makes the placards easier to read
  4. It leaves no room for expansion and can cause product to overflow or damage the tank Correct answer.

Explanation

Tanks need outage (ullage) space so liquid can expand with temperature changes without overflowing or stressing the tank. Overfilling can cause spills and vapor release. It does not improve handling or reduce weight.

Question 18Tank vehicle inspection and safety

During unloading, the driver should remain where?

  1. Inside the terminal office completing paperwork
  2. In the cab with the engine running
  3. At or near the controls where the transfer can be observed and shut off Correct answer.
  4. Away from the vehicle to direct traffic

Explanation

The driver must stay at the controls during transfer so the flow can be shut off immediately if a leak or other problem occurs. Leaving the area or staying in the cab with the engine running removes that control. Paperwork and traffic direction should not take priority over monitoring the transfer.

Question 19Tank vehicle inspection and safety

A tank vehicle's specification plate indicates a lower pressure rating than the product's vapor pressure at the planned temperature. What should you do?

  1. Load only at night when it is cooler
  2. Load the product anyway and vent continuously
  3. Do not load the product into that tank Correct answer.
  4. Reduce the load to half and proceed

Explanation

The tank must be rated for the product's pressure at the expected temperature. If the vapor pressure exceeds the tank rating, loading could overpressure the tank and cause a release. Venting, partial loading, or cooler nighttime loading does not correct an incompatible tank rating.

Question 20Tank vehicle inspection and safety

Which of the following best explains why a tanker driver should avoid abrupt lane changes at highway speed?

  1. Liquid surge can shift weight and cause loss of control or rollover Correct answer.
  2. The tank's placards may fall off
  3. The engine may overheat
  4. The cargo's hazard class may change

Explanation

Abrupt steering causes liquid to surge sideways, shifting weight onto one side and raising rollover risk. Smooth, planned lane changes keep the liquid settled. Placards, engine temperature, and hazard class are not affected by lane changes.

Question 21Tank vehicle inspection and safety

A driver must decide whether to accept a load when the tank's last product was incompatible with the new product. What is the safest course of action?

  1. Load the new product only if the tank is more than half full
  2. Require the tank to be cleaned and verified compatible before loading Correct answer.
  3. Load a small test quantity and observe for reaction
  4. Load the new product and rely on the tank's vapor recovery to clear residue

Explanation

Residues of an incompatible product can react dangerously with the new load, so the tank must be cleaned and confirmed compatible first. Vapor recovery does not neutralize chemical incompatibility. Test loads and fill level do not remove the hazard.

Question 22Tank vehicle inspection and safety

A tank vehicle is equipped with an internal emergency valve that closes automatically if the handle is released. Why is this design valuable during a hose failure?

  1. It opens the vent to relieve pressure
  2. It closes the valve and limits product release without driver action Correct answer.
  3. It disconnects the trailer from the tractor
  4. It increases the pump pressure to clear the hose

Explanation

A deadman-style internal valve closes when the handle is released, stopping flow if the driver lets go or a hose fails. This limits the amount of product released. The valve does not boost pump pressure, open vents, or separate the trailer.

Question 23Tank vehicle inspection and safety

During a pre-trip inspection, you find a small puddle of product under the tank and a strong odor. What is the most appropriate first action?

  1. Stop, eliminate ignition sources, and report the leak before moving Correct answer.
  2. Wipe up the puddle and continue the trip
  3. Start the engine and drive to a repair shop
  4. Open the dome cover to let vapor escape

Explanation

A leak with strong odor indicates a release of hazardous product. The driver should stop, keep ignition sources away, and report the leak rather than moving the vehicle. Driving, wiping up, or opening the dome cover can spread product or vapor and increase fire risk.

Question 24Tank vehicle inspection and safety

Which combination of factors most increases rollover risk for a tank vehicle on an off-ramp?

  1. A tank with all compartments empty and a straight ramp
  2. A partly filled tank, high entry speed, and a tightening curve Correct answer.
  3. A tank loaded evenly with new tires
  4. A full tank, low speed, and a gentle curve

Explanation

Rollover risk rises when free-surface surge from a partly filled tank combines with excessive speed and a curve that tightens. The surge shifts weight outward while centrifugal force grows with speed. Full or empty tanks, gentle curves, and good tires reduce that combined risk.

Question 25Tank vehicle inspection and safety

A shipper offers a tank vehicle load whose required placard is different from the placards already on the vehicle. What should the driver do?

  1. Remove all placards to avoid confusion
  2. Change the placards to match the load being carried before departure Correct answer.
  3. Cover the old placards with tape
  4. Leave the old placards and add the new one on the rear only

Explanation

Placards must match the hazardous material actually being carried, so they must be changed before the vehicle departs. Leaving mismatched placards misinforms responders, and removing or covering them is not compliant. Placards must be visible from the required positions.

Question 26Tank vehicle inspection and safety

What is the primary reason tank vehicles are built with a low center of gravity and a wide track?

  1. To improve fuel economy on long hauls
  2. To allow faster loading at terminals
  3. To reduce the risk of rollover from liquid surge and high center of mass Correct answer.
  4. To increase cargo capacity per compartment

Explanation

A tanker carries its weight high and the liquid can shift, so the design lowers the center of gravity and widens the stance to resist rollover. This is a fundamental stability feature of tank vehicle construction.

Question 27Tank vehicle inspection and safety

Before driving a tank vehicle loaded with a liquid, what should you do about the manhole covers or domes?

  1. Verify they are properly closed and secured Correct answer.
  2. Leave them open to vent vapor during the trip
  3. Loosen them to prevent pressure buildup
  4. Remove them to reduce weight

Explanation

Manhole covers and domes must be closed and secured before moving so liquid cannot escape and vapor is contained. An open or loose cover is a spill and contamination hazard.

Question 28Tank vehicle inspection and safety

Which document tells you the maximum allowable working pressure and the products a cargo tank is approved to carry?

  1. The vehicle registration card
  2. The shipper's loading ticket
  3. The cargo tank specification plate Correct answer.
  4. The bill of lading only

Explanation

The specification plate on the cargo tank lists its design and test data, including working pressure and the specification under which it was built. You compare the product's requirements against that plate before accepting the load.

Question 29Tank vehicle inspection and safety

What does the term 'outage' mean when loading a tank compartment?

  1. The loss of product through a leaking valve
  2. The empty space left above the liquid to allow for expansion Correct answer.
  3. The difference between loaded and unloaded weight
  4. The time the tank sits idle at a terminal

Explanation

Outage is the vapor space intentionally left in a compartment so liquid can expand with temperature changes without overflowing. Failing to leave enough outage can cause product to escape through vents.

Question 30Tank vehicle inspection and safety

Which hazard is created by a tank vehicle that is only partly filled and driven at highway speed?

  1. Reduced braking distance because of less weight
  2. Lower tire temperatures
  3. Improved traction on curves
  4. Increased surge forces that can destabilize the vehicle Correct answer.

Explanation

A partial load lets liquid move back and forth with more force, producing surge that can push the vehicle and raise rollover risk. A full or empty tank moves less violently than a partly filled one.

Question 31Tank vehicle inspection and safety

When must a tank vehicle driver use the emergency shutoff controls at a loading rack?

  1. Only after a spill has already occurred
  2. Never, because rack controls are for terminal staff only
  3. Whenever the driver needs to stop product flow in an emergency Correct answer.
  4. Only when a supervisor is present

Explanation

The driver must know the location and operation of emergency shutoff controls and use them if product flow must be stopped quickly. Prompt shutdown limits the size of a spill or fire.

Question 32Tank vehicle inspection and safety

Why should a tank vehicle be bonded and grounded before flammable product is loaded?

  1. To equalize static electrical potential and prevent a spark Correct answer.
  2. To measure the volume loaded
  3. To keep the product at a constant temperature
  4. To increase the pumping rate

Explanation

Bonding and grounding give static charges a path to dissipate so a spark cannot ignite flammable vapor. Both connections must be made before product starts flowing.

Question 33Tank vehicle inspection and safety

What is the purpose of baffles inside a tank compartment?

  1. To divide the tank into separate product sections
  2. To filter contaminants from the product
  3. To increase the tank's pressure rating
  4. To slow the movement of liquid and reduce surge Correct answer.

Explanation

Baffles are internal partitions that break up the flow of liquid, limiting fore-and-aft surge and helping keep the vehicle stable. They are distinct from the bulkheads that create separate compartments.

Question 34Tank vehicle inspection and safety

A driver is about to load a cargo tank and notices the specification plate shows a lower working pressure than the product's vapor pressure at the planned temperature. What is the correct action?

  1. Refuse the load because the tank is not suitable for the product Correct answer.
  2. Load normally and vent the tank continuously
  3. Load only half the compartments
  4. Load at a reduced rate to keep pressure down

Explanation

The tank must be rated for the pressure the product can generate at the expected temperature. If the plate rating is lower than the product's vapor pressure, the tank is not approved for that service and the load must be refused.

Question 35Tank vehicle inspection and safety

During a pre-trip inspection, you find the tank's rear bumper is missing or damaged on a cargo tank. Why does this matter for a tank vehicle?

  1. It holds the placards in place
  2. It supports the discharge hose
  3. It is required rear-end protection that limits damage and spill risk in a collision Correct answer.
  4. It only affects the vehicle's appearance

Explanation

Cargo tanks require rear-end protection to absorb impact and protect the tank shell and fittings from a rear collision. A missing or damaged bumper is a defect that must be corrected before operating.

Question 36Tank vehicle inspection and safety

You are inspecting a tank vehicle and find a discharge valve that will not close fully. What is the most appropriate action?

  1. Wrap the valve with absorbent material and proceed
  2. Continue and report the defect at the end of the trip
  3. Load only compartments that do not use that valve
  4. Place the vehicle out of service until the valve is repaired Correct answer.

Explanation

A valve that will not close can release product during transport or unloading, so the vehicle must not be placed in service until it is repaired. Leaking product valves are a serious spill and fire hazard.

Question 37Tank vehicle inspection and safety

When checking the interior of an empty cargo tank through the dome, what should the driver look for?

  1. The position of the vehicle's placards
  2. The color of the tank lining only
  3. The tread depth of the tires
  4. Leftover product, debris, or damage that could contaminate the next load Correct answer.

Explanation

The tank interior must be clean and free of residue or damage before a new product is loaded, because leftovers can contaminate the shipment or react with it. Inspecting through the dome lets you confirm cleanliness and shell condition.

Question 38Tank vehicle inspection and safety

A cargo tank is equipped with a high-level shutoff sensor. What is its function during loading?

  1. It measures the product's temperature
  2. It opens the vapor recovery line
  3. It records the driver's hours of service
  4. It stops product flow before the compartment overfills Correct answer.

Explanation

A high-level sensor detects when liquid reaches a set level and signals the loading system to stop flow, preventing overfill and spillage. Drivers should confirm the sensor is functioning before loading.

Question 39Tank vehicle inspection and safety

You are driving a tanker and must descend a long, steep grade. Which technique best controls speed and stability?

  1. Rely on the service brakes continuously down the grade
  2. Coast in neutral to save fuel
  3. Accelerate to build momentum through the curve
  4. Shift to a lower gear before the descent and use engine braking Correct answer.

Explanation

Selecting a lower gear before the grade uses engine braking to hold a steady speed and reduces reliance on the service brakes, which can overheat. Coasting or continuous braking reduces control of a heavy liquid load.

Question 40Tank vehicle inspection and safety

A tank vehicle is loaded with a product that must be kept within a temperature range. What should the driver monitor during the trip?

  1. The tire pressure only
  2. The product temperature and any tank temperature indicators Correct answer.
  3. The number of placards on the tank
  4. The vehicle's odometer

Explanation

Some products must stay within a specified temperature range to avoid pressure changes or product degradation. The driver should watch temperature indicators and act if readings move out of range.

Question 41Tank vehicle inspection and safety

Before unloading a tank vehicle at a terminal, why should the driver confirm the receiving tank has enough capacity?

  1. To determine the placard color
  2. To check the tire tread depth
  3. To calculate the driver's pay
  4. To prevent overfilling and spillage at the receiving end Correct answer.

Explanation

If the receiving tank cannot hold the delivered volume, product can overflow and create a spill or fire hazard. Confirming capacity and valve alignment before transfer prevents overfill.

Question 42Tank vehicle inspection and safety

A driver must unload at a facility where the vapor recovery connection does not match the vehicle's fitting. What is the safest course of action?

  1. Stop and resolve the connection issue before unloading Correct answer.
  2. Force the fittings together
  3. Vent vapor to the atmosphere during unloading
  4. Unload without connecting vapor recovery

Explanation

Vapor recovery must be properly connected to control emissions and prevent a flammable vapor release. Mismatched fittings should be resolved before product transfer begins rather than bypassed.

Question 43Tank vehicle inspection and safety

What should a driver do with the engine and keys during unloading at a terminal?

  1. Shut off the engine and keep the keys under the driver's control Correct answer.
  2. Leave the engine running to power the pump
  3. Hand the keys to any terminal employee
  4. Leave the engine running and keep the keys in the cab

Explanation

The engine should be shut off during unloading unless the pump requires it, and the driver must keep control of the keys. This prevents unauthorized movement and supports emergency response.

Question 44Tank vehicle inspection and safety

A tank vehicle is equipped with an internal valve that closes when the handle is released. What does this design accomplish?

  1. It increases the tank's pressure rating
  2. It allows faster loading by bypassing the valve
  3. It limits product loss if the driver loses control of the handle Correct answer.
  4. It prevents the tank from being grounded

Explanation

A self-closing internal valve shuts when released so product flow stops if the operator lets go, limiting a spill. This deadman feature is a key safety design on cargo tanks.

Question 45Tank vehicle inspection and safety

You are inspecting a tank vehicle and find the placards do not match the product named on the shipping paper. What is the correct action?

  1. Proceed because the placards are only advisory
  2. Correct the placards to match the shipping paper before moving Correct answer.
  3. Cover the mismatched placards with tape
  4. Remove all placards and drive without them

Explanation

Placards must correspond to the hazardous material actually loaded as shown on the shipping paper. A mismatch misinforms emergency responders and is a violation, so it must be corrected before the vehicle moves.

Question 46Tank vehicle inspection and safety

A driver is preparing to load a product that reacts dangerously with the previous cargo residue. What should happen first?

  1. Load the new product and monitor for a reaction
  2. Load a small test quantity to check for reaction
  3. Mix the products to dilute the residue
  4. Clean the tank to remove the incompatible residue before loading Correct answer.

Explanation

Incompatible residues can react with the new product, causing heat, pressure, or toxic gas. The tank must be cleaned and verified before the incompatible product is loaded.

Question 47Tank vehicle inspection and safety

On a tank vehicle, what is the purpose of the overturn protection around the dome and fittings?

  1. To hold the placards
  2. To make the tank easier to clean
  3. To increase the vehicle's speed rating
  4. To protect valves and fittings if the vehicle overturns Correct answer.

Explanation

Overturn protection is built to shield dome covers and fittings from damage in a rollover, reducing the chance of a major release. Inspectors check that this protection is intact.

Question 48Tank vehicle inspection and safety

A driver is hauling a tanker with several compartments loaded at different levels. How does this affect handling in a curve?

  1. The vehicle becomes more stable because weight is spread out
  2. Handling is identical to a single full compartment
  3. The load shifts unpredictably as liquid moves between compartments Correct answer.
  4. The vehicle corners faster because each compartment is lighter

Explanation

Liquid in partly filled compartments can move independently, shifting weight and changing the vehicle's balance in a curve. The driver must slow down and steer smoothly to keep the load settled.

Question 49Tank vehicle inspection and safety

A driver notices the tank's pressure relief valve is stuck closed. Why is this a serious defect on a cargo tank?

  1. It prevents the tank from being grounded
  2. It reduces the tank's weight
  3. It stops the placards from being read
  4. It can allow pressure to build until the tank or fittings fail Correct answer.

Explanation

A relief valve that cannot open lets internal pressure rise from heat or vapor expansion until the tank or its fittings are damaged. The valve must function to protect the tank from overpressure.

Question 50Tank vehicle inspection and safety

A tank vehicle is parked on a slope while partially loaded. Why is this a concern beyond ordinary parking rules?

  1. The liquid can shift and increase the chance of the vehicle moving or tipping Correct answer.
  2. The placards may fall off
  3. The engine will overheat
  4. The tires will lose pressure faster

Explanation

On a slope, liquid shifts toward the low end and raises the center of gravity, which can contribute to tipping or movement. The driver should park on level ground when possible and secure the vehicle.