Document ID: chunk:federal_register_of_legislation:F2006L03056:body:0:p5
Version: federal_register_of_legislation:F2006L03056
Segment Type: other
Provision Reference: 
Character Range: 14887–17979

outlet, if to the rear of the vehicle must discharge at not more than 10 degrees above or 45 degrees below the horizontal.
11.2.                                Omnibuses (MD and ME Vehicles)
11.2.1.                          the exhaust outlet must be as near as practicable to the rear of the vehicle ;
11.2.2.                          except in the case of vertical exhaust systems, the exhaust outlet must discharge rearwards or to the right of the vehicle, either horizontally or at no more than 45 degrees downwards, and must not extend beyond the perimeter of the vehicle when viewed in plan; and
11.2.3.                          when the exhaust outlet is vertical, it must be located behind the rearmost portion of the passenger compartment and may discharge either vertically upwards or rearwards at any angle above the horizontal.
11.3.                                N-Group Vehicles must meet the following requirements :
11.3.1.                          the exhaust outlet must be behind the rearmost seating position and at least 40 mm beyond the furthermost outboard or rearmost joint of the floorpan which is not continuously welded or permanently sealed,
and must not extend beyond the general perimeter of the vehicle when viewed in plan. In the case of permanently enclosed vehicles not fitted with vertical exhaust systems the outlet must extend to the perimeter of the vehicle when viewed in plan;
11.3.2.                          the height of the outlet must be either greater than 150 mm above the maximum height of the cab or less than 750 mm above the ground;
11.3.2.1.                    for above-cab exhausts, the direction of discharge must not be to the left of the vehicle and must be above the horizontal ;
11.3.2.2.                    for other exhausts, the direction of discharge must not be to the left of the vehicle and must be between the horizontal and 45 degrees downwards; and
11.3.3.                          any exposed section of an exhaust system discharging above the cabin must be shielded to prevent accidental personal contact in areas where contact can occur during normal operating and servicing conditions.
11.4.                                Vertical exhaust systems, where fitted, must meet one of the following requirements:
11.4.1.                          the orifice must be a horizontal cross-section of the exhaust pipe and must direct the exhaust gases vertically upwards; OR
11.4.2.                          the orifice must be a horizontal cross-section of the exhaust pipe and must be fitted with a rain cap such that in plan view the hinge of the cap makes an angle of 90 degrees ± 10 degrees with the longitudinal centreline of the vehicle, with the rain cap operating in a fore-and-aft direction; OR
11.4.3.                          the orifice must be angled and orientated so that the principal flow of the exhaust gases is directed rearwards, within 0o and 45o the longitudinal centreline of
the vehicle.

12.                                      EXTERNAL OR INTERNAL PROTRUSIONS
12.1.                                No