Document ID: chunk:federal_register_of_legislation:F2006L03253:body:0:p6
Version: federal_register_of_legislation:F2006L03253
Segment Type: other
Provision Reference: 
Character Range: 17109–20136

42.8.3.1.                    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;
42.8.3.2.                    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;
42.8.3.3.                    Not Used.
42.8.3.3.1.              for above-cab exhausts, the direction of discharge must not be to the left of the vehicle and must be above the horizontal ;
42.8.3.3.2.              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
42.8.3.4.                    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.
42.8.4.                          Vertical exhaust systems, where fitted, must meet one of the following requirements:
42.8.4.1.                    the orifice must be a horizontal cross-section of the exhaust pipe and must direct the exhaust gases vertically upwards; OR
42.8.4.2.                    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
42.8.4.3.                    the orifice must be angled and orientated so that the principal flow of the exhaust gases is directed rearwards, within 0o and 45o of the longitudinal
centreline of the vehicle.
Typical Exhaust Outlet Configuration
42.8.4.1                    42.8.4.2                         42.8.4.3

42.9.                                EXTERNAL OR INTERNAL PROTRUSIONS
42.9.1.                          No vehicle must be equipped with:
42.9.1.1.                    any object or fitting, not technically essential to such vehicle, which protrudes from any part of the vehicle so that it is likely to increase the risk of bodily injury to any person;
42.9.1.2.                    any object or fitting technically essential to such vehicle unless its design, construction and conditions and the manner in which it is affixed to the vehicle are such as to reduce to a minimum the risk of bodily injury to any person;
42.9.1.3.                    any object or fitting which, because it is pointed or has a sharp edge, is likely to increase the risk of bodily injury to any person; or
42.9.1.4.                    any bumper bar the end of which is not turned towards the