N.J. Admin. Code § 13:20-50A.9

Current through Register Vol. 56, No. 24, December 18, 2024

Section 13:20-50A.9 - Exhaust system

(a) The exhaust pipe, muffler, and tailpipe shall be outside the school bus body compartment and shall be attached to the chassis.

(b) The exhaust system components shall not be installed in a location that is likely to result in the burning, charring, or damaging of the electrical wiring, the fuel supply, or any combustible part of the school bus. The exhaust system on a gasoline-powered chassis shall be properly insulated from the fuel system, including the fuel tank and fuel tank connections, by a securely attached metal shield at any point where an exhaust system component is 12 inches or less from the fuel tank or fuel tank connections. When a metal shield is required, the metal shield shall provide a minimum clearance of two inches between the exhaust system components and the electrical wiring, fuel tank, fuel tank connections, and/or combustible components.

(c) The tailpipe shall be constructed of a corrosion-resistant tubing material at least equal in strength and durability to 16-gauge steel tubing of equal diameter.

1. The exhaust system tailpipe shall terminate to the rear of all doors and windows designed to be opened for ventilation.

2. The exhaust system shall not discharge to the atmosphere immediately below an emergency exit, fuel tank, or fuel tank fill pipe.

3. The exhaust system tailpipe of a gasoline-powered engine shall extend to the rear bumper or to the left or right side of the school bus body and shall discharge to the atmosphere either:

i. At or within six inches forward of the rearmost part of the school bus on either side; or

ii. At or beyond the rear school bus bumper up to a maximum of two inches.

4. The exhaust system tailpipe of an engine powered by a fuel other than gasoline shall extend to the rear bumper or to the left or right side of the school bus body and shall discharge to the atmosphere either:

i. At or within 15 inches forward of the rearmost part of the school bus on either side; or

ii. At or beyond the rear school bus bumper up to a maximum of two inches.

(d) The tailpipe diameter from the muffler to the end of the tailpipe shall comply with the chassis manufacturer's specifications.

(e) The muffler shall be constructed of corrosion-resistant material.

N.J. Admin. Code § 13:20-50A.9