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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 Colorado school bus test, and you must also pass skills tests in a school bus. The CO 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 Colorado CDL Manual: School Buses, Vehicle Inspection Test, Basic Control Skills Test and Road Test. After studying, take this CO CDL practice test to prepare for the actual bus test!
1. When stopping, drivers should bring the school bus to a full stop with the front bumper at least ______ away from students at the bus stop.
10 feet
5 feet
30 feet
50 feet
2. Select the best answer. Before operating the school bus, you should always:
check the left mirror.
check the right mirror.
check each mirror.
check the rearview mirror.
3. Vehicles that are required to stop at railroad crossings must stop no closer than _____ from the nearest rail of the nearest track.
25 feet
15 feet
50 feet
10 feet
4. When driving on slippery surfaces, a lack of spray from other vehicles indicates that:
the road hasn't started to ice up yet.
ice has formed on the road.
there is no ice on the road surface.
the pavement is dry.
5. When backing, you should:
only use mirror on the driver's side.
back and turn toward the right side whenever possible.
use the mirrors on both sides.
back quickly.
6. When crossing railroad tracks, you should:
stop on the tracks.
apply the parking brakes.
stay in your lane.
shift gears while crossing the tracks.
7. A passive railroad crossing is one that:
has a traffic control device installed at the crossing to regulate traffic.
requires you to stop and wait until the traffic control device installed at the crossing tells you to proceed.
has at least two traffic control devices installed at the crossing to regulate traffic.
does not have any type of traffic control device.
8. When students are boarding the school bus, you should do all of the following except:
count the number of students at the bus stop and ensure all board the bus.
monitor all mirrors continuously.
ask the students to board in pairs.
wait until students are seated before moving the bus.
9. If you cannot make a right turn without entering another traffic lane, you should:
swing wide to the left before starting the turn.
turn wide before you start the turn.
turn wide as you complete the turn.
watch out for vehicles coming toward you and back up for them.
10. You should position the overhead inside rearview mirror to see:
the students in the first three rows.
the heads of the students right behind you.
all of the students on the bus.
the rear of the bus.
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CO School Bus CDL Test

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