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Difficulty: MediumRegulatory Signs

A driver is traveling on a multi-lane highway where a white rectangular regulatory sign reading 'SLOWER TRAFFIC KEEP RIGHT' is posted. Which of the following correctly describes the legal requirement indicated by this sign?

  1. Vehicles moving slower than the prevailing traffic flow must yield the left lanes by driving in the right-hand lane except when passing or preparing to turn left.Answer
  2. B
    Drivers in the left lane must immediately slow down below the posted minimum speed limit whenever another vehicle enters from an on-ramp.
  3. C
    Drivers traveling in the right-hand lane must come to a complete stop to yield the right-of-way to faster vehicles changing lanes from the left.
  4. D
    Slower vehicles moving to the right lane are permitted to overtake vehicles ahead of them by passing on the shoulder near upcoming highway intersections.

Answer

Vehicles moving slower than the prevailing traffic flow must yield the left lanes by driving in the right-hand lane except when passing or preparing to turn left.
The 'SLOWER TRAFFIC KEEP RIGHT' regulatory sign directs drivers who are moving slower than the normal flow of traffic to stay in the right-hand lane so that faster-moving vehicles can safely pass on the left.

Step-by-Step Solution

1
Identify the sign category and message
The white rectangular sign reading 'SLOWER TRAFFIC KEEP RIGHT' is a regulatory sign setting a mandatory rule of the road.
Regulatory signs inform drivers of specific laws regarding lane usage, speed control, or movement directions.
2
Determine the driver's required action under this regulatory rule
Drivers traveling slower than normal traffic speed must move to and remain in the right lane, keeping left lanes open for passing vehicles.
This keeps traffic moving efficiently and prevents dangerous tailgating or improper passing on the right.

Key Concept

Regulatory Lane Use Restrictions
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Topics

Regulatory Signs

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