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The school bus endorsement applies to applicants who wish to drive a school bus in any Class A or B CDL. To add an S endorsement to your CLP/CDL, you must pass the New Mexico school bus test, and you must also pass skills tests in a school bus. The NM CDL bus test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The knowledge test covers the following sections of the New Mexico CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this NM CDL practice test to prepare for the actual bus test!
1. When you double your speed, the braking distance is:
3 times longer.
the same.
4 times longer.
2. After an accident, an improper use of flares could cause:
the springs to put on the brakes.
air pressure to build from 50 to 100 psi within 2 minutes.
a fire if spilled fuel is on the ground.
3. Before driving your bus, you must:
review the inspection report.
ensure the emergency exit door is open.
clean the interior.
4. When driving on slippery surfaces, a lack of spray from other vehicles indicates that:
there is no ice on the road surface.
ice has formed on the road.
the pavement is dry.
5. When unloading students, a bus driver should:
check around and underneath the bus.
tell students to exit the bus and walk to a position where they can plainly see the driver.
count the number of students to confirm the location of all of them before pulling away from the stop.
6. The safety valve is usually set to open at:
150 psi.
200 psi.
100 psi.
7. If the drive wheels begin to spin, you should:
accelerate smoothly and change gears as necessary.
apply your brakes all the way.
take your foot off the accelerator.
8. Service brakes should:
only be checked by a mechanic.
be checked before each trip.
always be checked before applying the brakes.
9. Texting while operating a commercial motor vehicle is:
acceptable if you are contacting your supervisor.
acceptable if you are contacting your dispacther.
10. To recognize distracted drivers, you should watch for all of the following except:
Drivers who are involved in conversations with their passengers.
Students sitting on a bench waiting for a bus.
Vehicles traveling at inconsistent speeds.
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NM School Bus Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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