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Difficulty: MediumSharing the Road with Large Vehicles

Why should a driver increase their following distance to at least four seconds when trailing a large commercial truck on a high-speed roadway?

  1. To allow adequate visibility around the truck and provide extra stopping room because large trucks obscure forward sightlines and require much longer braking distances.Answer
  2. B
    To remain inside the truck driver's rear blind spot where draft currents reduce fuel consumption.
  3. C
    Because large trucks can decelerate and come to a complete stop in much shorter distances than passenger cars.
  4. D
    To maintain the maximum posted speed limit even when heavy traffic prevents safe stopping space.

Answer

Drivers should increase following distance behind large commercial trucks to at least four seconds because trucks block the view of traffic ahead and need greater distance to brake safely.
Increasing the following distance behind a large commercial truck to four seconds or more opens up the sightlines around the vehicle, letting the trailing driver see hazards ahead early while providing an ample safety cushion to stop.

Step-by-Step Solution

1
Analyze visual and spatial limitations when following large vehicles.
Recognize that a large truck obstructs the forward view of the road, hiding potential hazards, traffic slowdowns, and road signals ahead.
Maintaining extra distance re-establishes a broader field of view around the truck's trailer.
2
Evaluate stopping distance physics for heavy vehicles.
Understand that fully loaded commercial trucks require up to 40% more stopping distance than standard passenger cars.
An extended following time buffer ensures you have adequate time to react if the truck abruptly slows down or encounters an emergency.

Key Concept

Following Distance and Blind Spots when Sharing the Road with Large Vehicles
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Topics

Sharing the Road with Large Vehicles

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