CDL Air Brakes 10 Questions And Answers
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Terms in this set
10
stop light switch
turns on break lights
spring breaks ON
20-40 psi (typically 20-30 psi)
Supply pressure gauge
tells how much air pressure is in tanks
max leakage rate
less than 2 psi in 1 min
dual air systems
85-100 psi within 45 sec
single air system
50-90 psi within 3 min (idle speed: 600-900 rpms)
total stopping distance
perception distance + reaction distance + break lag + break distance
lag distance @ 55 mph on DRY pavement
adds 32 ft (total stop distance: over 450 ft)
safe speed on long/steep downgrades
5mph slower than speed limit
air pressure governer off
120-140 psi