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Difficulty: MediumEmergency Equipment Requirements

A driver is conducting a pre-trip inspection on a straight truck transporting non-hazardous grocery freight. The vehicle's electrical distribution system is equipped entirely with automatic circuit breakers rather than disposable blade fuses. Under Federal Motor Carrier Safety Administration (FMCSA) safety regulations, which combination of emergency equipment must be present and secured on board before operation?

  1. A
    Two bidirectional red reflective triangles, six spare electrical fuses, and one properly mounted 5 B:C fire extinguisher
  2. B
    Three bidirectional red reflective triangles, three traffic safety cones, and at least one spare fuse for each major circuit
  3. Three bidirectional red reflective triangles and one fully charged, securely mounted fire extinguisher rated at least 5 B:CAnswer
  4. D
    Six liquid-burning flares and one properly secured fire extinguisher with a minimum rating of 10 B:C

Answer

Three bidirectional red reflective triangles and one fully charged, securely mounted fire extinguisher rated at least 5 B:C.
Federal Motor Carrier Safety Administration (FMCSA) regulations (49 CFR § 393.95) require power units operating in commercial transport to carry three mandatory items: properly rated fire extinguishers, warning devices for stopped vehicles, and spare electrical fuses. For vehicles transporting non-hazardous cargo, a fire extinguisher with a minimum rating of 5 B:C is required. The vehicle must carry at least three bidirectional red reflective triangles. Because this vehicle utilizes circuit breakers, the requirement to carry spare fuses does not apply.

Step-by-Step Solution

1
Determine the warning device requirement under FMCSA 49 CFR § 393.95.
The vehicle must carry at least three bidirectional red reflective triangles (or six fusees / three liquid burning flares).
Commercial motor vehicles must be equipped to alert approaching traffic during emergency roadside stops.
2
Determine the fire extinguisher rating required for non-hazardous cargo transport.
A minimum Underwriters' Laboratories rating of 5 B:C (or two extinguishers rated 4 B:C or higher) is required.
Transporting non-hazardous dry or refrigerated freight requires a minimum 5 B:C extinguisher, whereas placarded hazardous materials require a 10 B:C rating.
3
Evaluate the spare electrical fuse requirement given the vehicle's circuit breaker configuration.
No spare fuses are required.
Federal regulations exempt commercial motor vehicles from carrying spare fuses if all electrical circuits are protected by automatic circuit breakers.

Key Concept

Mandatory commercial motor vehicle emergency equipment specifications and circuit breaker exemptions under FMCSA safety rules.
Estimated Time:1m 0s
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Emergency Equipment Requirements

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