Question 1 of 20
Score: 0/0When driving a 100-foot twin trailer combination at 50 mph on a dry road with good visibility, how many seconds of space should you keep ahead?
ExplanationFor long combination vehicles like a 100-foot twin trailer, it's recommended to maintain about 1 second of following distance for every 10 feet of vehicle length, so keeping 11 seconds of space ensures enough stopping distance.
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