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Question

Difficulty: EasySpeed Control and Following Distance

You are driving behind a large commercial vehicle on a multi-lane highway. Why should you maintain a larger following distance than you normally would behind a standard passenger car?

  1. To allow a clear view of the road ahead and ensure your vehicle stays visible in the truck driver's side mirrors.Answer
  2. B
    To reduce your space cushion to a 1-second gap so other drivers cannot merge between your vehicles.
  3. C
    Because drivers are legally permitted to exceed posted speed limits whenever traveling directly behind heavy trucks.
  4. D
    Because posted speed signs automatically decrease by 15 mph whenever commercial vehicles enter the flow of traffic.

Answer

Maintain a larger following distance behind a large commercial vehicle to ensure a clear view of the road ahead and to remain visible in the truck driver's side mirrors.
Increasing following distance behind large commercial vehicles opens up your field of view for traffic conditions ahead and positions your car where the truck driver can see you in their side mirrors.

Step-by-Step Solution

1
Identify the hazard associated with following large vehicles closely.
Large commercial vehicles block forward visibility and have substantial blind spots directly behind them.
Maintaining only a standard passenger car following distance behind a truck severely limits sight distance and places your vehicle in the driver's blind spot.
2
Determine the appropriate driving strategy to mitigate this risk.
Increase following distance to 4 seconds or more.
Dropping back creates a wider sight angle to see hazards ahead and ensures the truck driver can see your vehicle in their side mirrors.

Key Concept

Following Distance and Visibility Behind Large Vehicles
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Topics

Speed Control and Following Distance

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