Do the FMCSRs specify a particular pressure relief system?

Section § 393.67: Liquid fuel tanks.

Question 2: Do the FMCSRs specify a particular pressure relief system?

Guidance: No, but the performance standards of § 393.67(d) must be met.

May a properly vented fuel cap be used on a fuel tank equipped with another fuel venting system?

Section § 393.67: Liquid fuel tanks.

Question 1: May a properly vented fuel cap be used on a fuel tank equipped with another fuel venting system?

Guidance: Yes (see § 393.3).

Must a motor vehicle that meets the definition of a "commercial motor vehicle" in § 390.5 because it transports hazardous materials in a quantity requiring placarding under the Hazardous Materials Regulations (49 CFR parts 171-180) comply with the fuel

Section § 393.65: All fuel systems.

Question 2: Must a motor vehicle that meets the definition of a ‘‘commercial motor vehicle’’ in § 390.5 because it transports hazardous materials in a quantity requiring placarding under the Hazardous Materials Regulations (49...

Driver handout

May a fuel fill pipe opening be placed above the passenger floor level if it is not physically within the passenger compartment?

Section § 393.65: All fuel systems.

Question 1: May a fuel fill pipe opening be placed above the passenger floor level if it is not physically within the passenger compartment?

Guidance: Yes. In addition, the fill pipe may intrude into the passenger...

Which edition of FMVSS No. 217 is required to be used in determining the emergency exit space requirements when retrofitting buses?

Section § 393.62: Emergency exits for buses.

Question 4: Which edition of FMVSS No. 217 is required to be used in determining the emergency exit space requirements when retrofitting buses?

Guidance: The cross reference to FMVSS No. 217 applies to the...

Do school buses which meet the school bus emergency exit requirements established by NHTSA’s November 2, 1992, final rule on FMVSS No. 217 have to be retrofitted with additional emergency exits when used in interstate commerce for non-school bus operation

Section § 393.62: Emergency exits for buses.

Question 3: Do school buses which meet the school bus emergency exit requirements established by NHTSA’s November 2, 1992, final rule on FMVSS No. 217 have to be retrofitted with additional emergency exits when used in...

When calculating the minimum emergency exit space required on school buses used in non-school bus operations, should two or three passengers per bench seat be used in determining the adult seating capacity?

Section § 393.62: Emergency exits for buses.

Question 2: When calculating the minimum emergency exit space required on school buses used in non-school bus operations, should two or three passengers per bench seat be used in determining the adult seating capacity?...

May a bus being operated by a for-hire motor carrier of passengers, under contract with a governmental agency to provide transportation of prisoners in interstate commerce, be allowed to operate with security bars covering the emergency push-out windows a

Section § 393.62: Emergency exits for buses.

Question 1: May a bus being operated by a for-hire motor carrier of passengers, under contract with a governmental agency to provide transportation of prisoners in interstate commerce, be allowed to operate with security...

If a crack extended into the thickness of the glass at such an angle

Section § 393.60: Glazing in specified openings.

Question 3: If a crack extended into the thickness of the glass at such an angle as to measure 1/4’’ or more, measuring from the top edge of the crack on the outside surface of the windshield to vertical line drawn...