Question:
You are driving a 100-foot truck with double trailers at 50 mph. The road is dry, and visibility is good. You should keep at least ___ seconds of space ahead of you.
A
11
explanation
How much space should you keep in front of you? One good rule says you need at least 1 second for each 10 feet of vehicle length at speeds below 40 mph. At greater speeds, you must add 1 second for safety.
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