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Difficulty: MediumSpeed Limits and Speed Regulation

A motorist is driving on a multi-lane highway with a standard speed limit of 65 mph65\text{ mph} and enters a designated construction area displaying a regulatory sign stating 45 mph45\text{ mph} when workers are present. Active road construction crews are working near the shoulder, but other vehicles are traveling at 55 mph55\text{ mph}. Under speed regulation laws, which of the following actions is the driver legally required to take?

  1. Maintain a speed of no more than 45 mph45\text{ mph}, reducing speed further if road conditions require, regardless of surrounding traffic.Answer
  2. B
    Accelerate to 55 mph55\text{ mph} to match the surrounding flow of traffic and prevent obstructing other vehicles.
  3. C
    Maintain 65 mph65\text{ mph} as long as construction vehicles and equipment do not physically block the active driving lane.
  4. D
    Observe the 45 mph45\text{ mph} limit only if flashing yellow beacon lights are active on the work zone signs.

Answer

The driver must maintain a speed of no more than 45 mph45\text{ mph}, adjusting lower if conditions warrant, regardless of the faster surrounding traffic flow.
Posted regulatory work zone limits become active and legally binding when the specified condition—workers present—is satisfied. Drivers are legally obligated to obey the reduced speed limit regardless of whether other surrounding vehicles are exceeding it.

Step-by-Step Solution

1
Identify the regulatory speed sign requirements.
The work zone has a posted conditional speed limit of 45 mph45\text{ mph} when workers are present.
Work zone speed limits are regulatory limits designed to protect road crews and drivers.
2
Determine whether the condition for the speed limit is met.
Workers are actively present along the shoulder, activating the legal 45 mph45\text{ mph} speed limit.
When the posted condition occurs, the reduced limit becomes legally binding.
3
Evaluate the legality of matching surrounding traffic speed.
Surrounding traffic traveling at 55 mph55\text{ mph} is breaking the posted limit and does not grant legal exemption to match their speed.
The law requires adherence to posted limits regardless of other drivers' behavior.

Key Concept

Work Zone Speed Limits and Speed Regulation Laws
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Topics

Speed Limits and Speed Regulation

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