Nebraska CDL — General Knowledge practice
Nebraska CDL — General Knowledge: Signals & Pavement Markings practice test
How to read traffic signals, lane lines, and pavement markings — including yellow and white lines, arrows, and flashing lights.
Content reviewed against official driver handbooks · August 12, 2026
13 questions · pass with 10 correct. You get instant feedback and an explanation after every answer.
Study questions with answers
12 sample Signals & Pavement Markings questions with the correct answer, a short explanation, and the official handbook reference. Read through them, then take the quiz above.
Show all 12 questions with answers
1. According to the manual, how much light may dirty headlights give?
Correct answer: Only half of what they should
Dirt can cut headlight output to half, which reduces how far you can see and makes your vehicle harder for others to notice.
Source: Nebraska Commercial Driver's License Manual — Section 2.11.4, Vehicle Factors
2. You have to stop in the roadway to unload cargo. How does the manual say to warn the drivers behind you?
Correct answer: Flash your brake lights and avoid stopping suddenly
For stops in the roadway, such as unloading or a railroad crossing, the manual says to warn following drivers by flashing the brake lights and not to stop abruptly.
Source: Nebraska Commercial Driver's License Manual — Section 2.5.1, Signal Your Intentions
3. On the road test's stop/start maneuver, which signal do you turn on as you prepare to pull over?
Correct answer: The right turn signal
You signal right while preparing to stop. The four-way flashers come on only once you are stopped and the turn signal has been canceled.
Source: Nebraska Commercial Driver's License Manual — Section 13.1.6, Stop/Start
4. On the stop/start maneuver you pull away from the roadside using your left turn signal. When do you cancel it?
Correct answer: Once the vehicle is back in the flow of traffic
The left signal stays on while you steer and accelerate into the proper lane, and it is canceled once the vehicle has rejoined traffic.
Source: Nebraska Commercial Driver's License Manual — Section 13.1.6, Stop/Start
5. Which headlight setting does the manual recommend for the best visibility in fog, even in daytime?
Correct answer: Low beams together with fog lights
In fog the manual calls for low-beam headlights and fog lights, day or night, and for staying alert to drivers who have forgotten their lights.
Source: Nebraska Commercial Driver's License Manual — Section 2.12, Driving in Fog
6. At the rear of a trailer you find a turn signal with a white lens. Under the walk-around inspection guide, is that color acceptable?
Correct answer: No, a rear turn signal should be red, yellow, or amber
At the rear, turn signals may be red, yellow, or amber. Amber or white applies to signals that face forward.
Source: Nebraska Commercial Driver's License Manual — Section 2.1.5, Seven-step Inspection Method
7. After you start the engine during an inspection, how should the coolant temperature gauge behave?
Correct answer: It should climb gradually into the normal operating range
Coolant temperature, like engine oil temperature, should rise gradually to its normal range after start-up.
Source: Nebraska Commercial Driver's License Manual — Section 2.1.5, Seven-step Inspection Method
8. On the vehicle inspection test you confirm that the dashboard turn signal indicators light up. Does that also cover the turn signals themselves?
Correct answer: No, the actual signals, flashers, and high beams are checked separately in the lights operation check
A note in the inspection section says the working of the actual turn signals, four-way flashers, and high beams is inspected separately during the lights operation check.
Source: Nebraska Commercial Driver's License Manual — Section 11.1.1, In-Vehicle/Engine Start
9. On the road test, once you are on an expressway exit ramp, how must you continue?
Correct answer: Keep slowing inside the lane markings while leaving adequate space from other vehicles
On the ramp you keep decelerating inside the lane markings and maintain enough space between your vehicle and others.
Source: Nebraska Commercial Driver's License Manual — Section 13.1.5, Expressway or Rural/Limited Access Highway
10. During a lane change, why does the manual have you check your mirrors again right after you signal?
Correct answer: To confirm your blind spot is still empty
One of the mirror checks during a lane change comes after signaling, to confirm that nobody has slipped into your blind spot.
Source: Nebraska Commercial Driver's License Manual — Section 2.4.2, Seeing to the Sides and Rear
11. Ahead of a railroad crossing, a white stop line is painted across the lane. While a school bus is stopped at the crossing, where must its front stay?
Correct answer: Behind the line
Where a white stop line is painted ahead of the tracks, the manual says the front of the school bus has to remain behind it during the stop.
Source: Nebraska Commercial Driver's License Manual — Section 2.15.2, Warning Signs and Devices
12. You are driving a bus on the road test and used the four-way flashers for a railroad crossing. When do you turn them off?
Correct answer: After the vehicle has crossed the tracks
The flashers go on as the vehicle approaches the crossing and are deactivated once it has crossed the tracks.
Source: Nebraska Commercial Driver's License Manual — Section 13.1.8, Railroad Crossing
More CDL — General Knowledge topics
Practice Signals & Pavement Markings in another state
Every Nebraska question is written from the official Nebraska driver handbook and checked against its current edition. DMV Test Free is a free, independent study resource — not affiliated with any DMV or government agency. About DMV Test Free