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Question

Difficulty: MediumDistracted and Inattentive Driving

A commercial motor vehicle driver has mounted a mobile phone in a cradle on the dashboard to maintain communication with dispatch while en route. Under federal safety regulations, which condition must be met for the driver to lawfully use the device while operating the vehicle?

  1. A
    Reaching across the cab into a passenger-side compartment to retrieve the device is permitted as long as speakerphone mode is activated before speaking.
  2. Initiating or answering a call must require no more than a single button touch while the driver remains properly restrained in the normal driving position.Answer
  3. C
    Holding the mobile device to send brief voice memos is allowed when the commercial motor vehicle is temporarily stopped at a red traffic signal.
  4. D
    Manual text entry on the mounted screen is permissible during slow-moving congested traffic where vehicle speeds remain under 15 mph.

Answer

Initiating or answering a call must require no more than a single button touch while the driver remains properly restrained in the normal driving position.
Federal Motor Carrier Safety Administration (FMCSA) rules strictly define lawful hands-free mobile communication: the device must be mounted or placed where it can be reached without unfastening the safety belt or leaving the standard seated driving position, and call operation must require no more than a single button touch.

Step-by-Step Solution

1
Analyze federal commercial motor vehicle mobile device regulations under FMCSA 49 CFR Parts 383 and 392.
The regulations strictly prohibit hand-held phone use and texting while driving a commercial motor vehicle.
Federal safety standards aim to eliminate manual, visual, and cognitive distractions while operating heavy vehicles on public roads.
2
Evaluate the compliant operational conditions for hands-free device usage.
Hands-free operation is compliant only if the mobile device is within immediate reach of the driver in a normal seated driving posture with the seat belt fastened, and the call requires no more than a single button press to initiate or answer.
This restriction ensures the driver keeps eyes on the road and maintains proper physical control of the steering wheel and pedals.

Key Concept

FMCSA hands-free mobile phone compliance and operational boundaries
Estimated Time:1m 0s
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Topics

Distracted and Inattentive Driving

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