2026 Free Colorado DMV Double Endorsement Test 1 (20 Questions And Complete Answers)
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Trailers manufactured after ____ must be equipped with Anti-Lock Braking Systems (ABS).
1. 1943
2. 1998
3. 2009
4. 2015
1. 1943
2. 1998
3. 2009
4. 2015
1998
If the brakes “pull” to one side or the other when you use them, it's a sign that:
1. The brakes are working properly.
2. The brakes need to be checked.
3. The brakes are new.
4. The brakes have too much stopping power.
1. The brakes are working properly.
2. The brakes need to be checked.
3. The brakes are new.
4. The brakes have too much stopping power.
The brakes need to be checked.
The ____ tells a driver how much pressure is in the air tanks.
1. Application pressure gauge
2. Air compressor governor
3. Supply pressure gauge
4. Drum brake
1. Application pressure gauge
2. Air compressor governor
3. Supply pressure gauge
4. Drum brake
Supply pressure gauge
Which of the following is not a part of an air brake system?
1. A service brake system
2. A parking brake system
3. An emergency brake system
4. An axle brake system
1. A service brake system
2. A parking brake system
3. An emergency brake system
4. An axle brake system
An axle brake system
If braking at a speed of 55 mph while driving on dry pavement, the brake lag can add ____ to your vehicle's total stopping distance.
1. 32 feet
2. 15 feet
3. 50 feet
4. 10 feet
1. 32 feet
2. 15 feet
3. 50 feet
4. 10 feet
32 feet
When a vehicle is started, warning lights and buzzers:
1. Should stay on for several minutes.
2. Should turn off within a few seconds.
3. Should stay on until manually turned off.
4. Should not come on.
1. Should stay on for several minutes.
2. Should turn off within a few seconds.
3. Should stay on until manually turned off.
4. Should not come on.
Should turn off within a few seconds.
When driving a double or triple, it is important to remember that:
1. The vehicle requires more space than most other vehicles.
2. Other drivers will likely get out of your way when necessary.
3. The vehicle likely weighs the same as other vehicles.
4. The vehicle can easily fit into small spaces.
1. The vehicle requires more space than most other vehicles.
2. Other drivers will likely get out of your way when necessary.
3. The vehicle likely weighs the same as other vehicles.
4. The vehicle can easily fit into small spaces.
The vehicle requires more space than most other vehicles.
When entering traffic, the driver of a double or triple needs to be aware that doubles and triples:
1. Need more space to merge into traffic than smaller vehicles.
2. Are exempt from most speed limits.
3. Are difficult for other drivers to see.
4. Are not permitted on interstates.
1. Need more space to merge into traffic than smaller vehicles.
2. Are exempt from most speed limits.
3. Are difficult for other drivers to see.
4. Are not permitted on interstates.
Need more space to merge into traffic than smaller vehicles.
During an applied leakage test, the maximum leakage rate for a triple combination vehicle is:
1. 10 psi in a minute.
2. 8 psi in a minute.
3. 6 psi in a minute.
4. 4 psi in a minute.
1. 10 psi in a minute.
2. 8 psi in a minute.
3. 6 psi in a minute.
4. 4 psi in a minute.
6 psi in a minute.
The air storage tanks:
1. Hold only enough air for one braking cycle.
2. Hold enough air for brakes to be used several times if the compressor stops working.
3. Do not hold air unless there is an emergency.
4. Hold enough air for more than 1,000 braking cycles.
1. Hold only enough air for one braking cycle.
2. Hold enough air for brakes to be used several times if the compressor stops working.
3. Do not hold air unless there is an emergency.
4. Hold enough air for more than 1,000 braking cycles.
Hold enough air for brakes to be used several times if the compressor stops working.
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