🛞Alaska Air Brakes — Question 10 of 10
The spring brakes used on the chambers in a straight truck will bring you to a stop when air pressure drops below ____ psi.
Answer: A
20
The spring brakes used on the chambers of a straight truck and tractor will activate below 45 psi, usually in the 20 to 30 psi range.
Source: Alaska CDL Manual
All choices
- A20
- B100
- C60
Alaska CDL Air Brakes Test Info
Questions on Exam
25
Passing Score
80%
Time Limit
Typically 30 minutes; varies by testing location
Age Requirements
Intrastate: 18+ · Interstate: 21+
Alaska Division of Motor Vehicles
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More CDL Air Brakes Practice Questions
- To check the free play of manual slack adjusters of S-cam brakes, you should park on:
- A slack adjuster free play needs to be adjusted if it is more than about ____ when you pull hard on it.
- Stab braking:
- Which procedure is used in controlled braking?
- Which braking technique may be used to stop quickly when you do not have ABS?