Missouri CDL — General Knowledge: Right-of-Way Practice Test

Question 1

What does a move-over law require of drivers approaching a stopped emergency vehicle at the roadside?

Accepted Answer

Slow down and move to a lane away from it when safe — Move-over laws direct you to slow down and, where safe, change into a lane away from the emergency vehicle or work zone; if you cannot change lanes, slow and pass with caution.

Answer

Maintain speed and stay in your current lane

Answer

Stop completely in the travel lane

Answer

Sound your horn and continue at full speed

Question 2

Before crossing railroad tracks, what must you be certain of?

Accepted Answer

That you can clear the entire crossing without stopping on it — Never let traffic ahead trap you on the rails; be sure you can make it entirely across the tracks before you start over them.

Answer

That the crossing lights are the newest model

Answer

That another truck is ahead of you

Answer

That your radio is turned up

Question 3

At a two-track crossing, why must you double-check after one train passes?

Accepted Answer

Because a train on one track may hide one on the other — A train on one track can hide a second train on the other, so look both ways and make sure no other train is near before you start across.

Answer

Because the gates always fail on double tracks

Answer

Because trains never use the second track

Answer

Because the second track is only for repairs

Question 4

Which vehicles are always required to stop at a railroad advance warning even when no train is visible?

Accepted Answer

Passenger-carrying and hazmat vehicles — Vehicles carrying passengers and those hauling hazardous materials are required to stop at these crossings.

Answer

Empty flatbed trucks

Answer

Any single-axle truck

Answer

Only vehicles pulling doubles

Question 5

If two lanes are available to turn left, which one should a large vehicle use?

Accepted Answer

The right turn lane of the two — Take the right-hand of the two turning lanes; starting in the inside lane may force you to swing right to complete the turn.

Answer

The left, inside turn lane

Answer

Whichever lane is emptier

Answer

Straddle both lanes

Question 6

When making a left turn at an intersection, when should you begin turning?

Accepted Answer

After your vehicle reaches the middle of the intersection — Do not begin a left turn until your vehicle has moved to the middle of the intersection; turning too soon can let the left side strike another because of off-tracking.

Answer

As soon as you enter the intersection

Answer

Only once oncoming traffic has completely cleared the county

Answer

Before entering, from the far lane

Question 7

Compared with a car, what does a large commercial vehicle usually need in order to cross or enter traffic?

Accepted Answer

A much larger gap in traffic — Because of slow acceleration and the room a big rig takes, you often need a considerably larger gap in traffic than a car would.

Answer

A smaller gap because it is more visible

Answer

The same gap as any passenger car

Answer

No gap at all if it uses flashers

Question 8

Why should you not begin a right turn by first swinging wide to the left?

Accepted Answer

A driver behind may try to pass on your right — Swinging left first may lead a driver behind you to assume you intend to go left, prompting them to try to pass on your right and causing a crash as you finish the turn.

Answer

It uses too much fuel

Answer

It is illegal in every state

Answer

It damages the transmission

Question 9

During a right turn, if oncoming vehicles are in the lane you must cross into, what should you NOT do?

Accepted Answer

Do not back up to give them room — Give oncoming vehicles room to pass or stop, but do not back up for them, because reversing could cause you to hit someone behind you.

Answer

Do not turn on your signal

Answer

Do not look in your mirrors

Answer

Do not slow down at all

Question 10

When you approach a work zone with an emergency vehicle stopped nearby, what is the preferred response if it is safe?

Accepted Answer

Move into a lane not adjacent to the work zone — You should slow down and yield by moving into a lane that is not next to the emergency vehicle or work zone when traffic and safety allow.

Answer

Keep your speed and hold your lane

Answer

Come to a full stop in your lane

Answer

Drive onto the shoulder to pass

Question 11

When flashing red lights begin at a railroad crossing, what must you do?

Accepted Answer

Stop and give the approaching train the right-of-way — Flashing red lights mean a train is coming; you must stop and yield the right-of-way to it.

Answer

Speed across before the train arrives

Answer

Roll through slowly without stopping

Answer

Turn around and find another route

Question 12

At a crossing equipped with gates, when may you proceed across the tracks?

Accepted Answer

Only after the gates go up and the lights stop flashing — You must stop when the lights flash and before the gate comes down, then wait until the gates rise and the lights stop before continuing when safe.

Answer

As soon as the gate begins to rise, even mid-motion

Answer

Whenever you no longer hear the bell

Answer

Immediately after the train's engine passes

Right-of-Way

Study questions with answers

1. What does a move-over law require of drivers approaching a stopped emergency vehicle at the roadside?

2. Before crossing railroad tracks, what must you be certain of?

3. At a two-track crossing, why must you double-check after one train passes?

4. Which vehicles are always required to stop at a railroad advance warning even when no train is visible?

5. If two lanes are available to turn left, which one should a large vehicle use?

6. When making a left turn at an intersection, when should you begin turning?

7. Compared with a car, what does a large commercial vehicle usually need in order to cross or enter traffic?

8. Why should you not begin a right turn by first swinging wide to the left?

9. During a right turn, if oncoming vehicles are in the lane you must cross into, what should you NOT do?

10. When you approach a work zone with an emergency vehicle stopped nearby, what is the preferred response if it is safe?

11. When flashing red lights begin at a railroad crossing, what must you do?

12. At a crossing equipped with gates, when may you proceed across the tracks?

More CDL — General Knowledge topics

Practice Right-of-Way in another state