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Zorluk: KolaySpace Ahead and Following Distance

You are operating a 30-foot delivery truck at 30 mph along a clear, dry roadway. Based on standard commercial motor vehicle safety guidelines, what is the minimum safe following distance you should maintain behind the vehicle ahead?

  1. A
    2 seconds
  2. 3 secondsCevap
  3. C
    4 seconds
  4. D
    6 seconds

Cevap

3 seconds
According to the CDL following distance formula, a driver must maintain at least 1 second for every 10 feet of vehicle length at speeds under 40 mph. For a 30-foot truck traveling at 30 mph on dry pavement, the required buffer is exactly 3 seconds.

Adım Adım Çözüm

1
Determine the base time required for vehicle length
30 feet / 10 feet per second = 3 seconds
The basic CDL rule requires at least 1 second for every 10 feet of vehicle length.
2
Check vehicle speed for speed-based adjustment
Operating speed is 30 mph, which is below 40 mph (add 0 additional seconds)
An additional 1 second is only added when driving at or above 40 mph.
3
Sum the time components to find total following distance
3 seconds + 0 seconds = 3 seconds
Road conditions are clear and dry, so no adverse weather multiplier is needed.

Anahtar Kavram

Commercial vehicle safe following distance formula under 40 mph
Tahmini Süre:45s
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Konular

Space Ahead and Following Distance

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