Practice question

How does air brake lag affect stopping distance compared to hydraulic brakes?

Air brakes have no lag; they respond faster than hydraulic brakes
Air brakes take about one-half second longer for the air to travel through the lines, adding distance
Air brakes respond in the same time as hydraulic brakes
Air brakes add about 5 seconds to the braking response

Answer: B — Air brakes take about one-half second longer for the air to travel through the lines, adding distance

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