Operation & Safety第 47 / 60 题
What is brake lag in an air brake system?
a.The short delay before the brakes work after you press the pedal, because air must travel through the lines
b.The time it takes to build air pressure at startup
c.The distance the vehicle travels before you see a hazard
d.The time the compressor takes to cut out
解析
Brake lag is the time it takes, after you push the brake pedal, for the air to flow through the lines and actually apply the brakes. On air brakes this adds roughly half a second of travel that hydraulic brakes do not have. Drivers must account for this extra distance when stopping.
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