At a speed of 55 mph, you need about __________ to pass another vehicle.
Correct answer
- ten seconds
- two seconds
- five seconds
Explanation
At a speed of 55 mph, you need about ten seconds to pass another vehicle. This means you need a ten-second gap in oncoming traffic and sight-distance to pass. At 55 mph, your vehicle will travel about 807 feet in ten seconds. So will an oncoming vehicle that is also traveling at 55 mph. Therefore, to pass safely without risking a collision with the oncoming vehicle, you will need over 1,600 feet of empty roadway ahead of you ? about three-tenths of a mile. It is hard to judge the speed of oncoming vehicles at this distance.
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