Hazards Identified
Vehicle exhaust fumes (various toxic effects).

Hazard-Specific Personal Protective Equipment
Can not rely on normal respiratory protective equipment.  If not sufficient ventilation, requires air supplied respirator or self-contained breathing apparatus.

Hazard-Specific Training
Proper use of exhaust and air supply systems.

Safe Work Practice

• Note that the fumes may not be visible and may linger for some time if not exhausted.
• Where necessary to run a vehicle indoors, position the vehicle to facilitate easy access to the tailpipe exhaust extraction system.
• Turn on the exhaust fan(s) and the supply (make up air) fan(s).  For locations without supply fans, open a window or door to provide fresh air to replace that which is exhausted.
• Attach the vehicle exhaust to the tailpipe exhaust system by means of the overhead hose or similar system.  For locations without a tailpipe exhaust system, attach an exhaust pipe extension or hose to the vehicle exhaust and run the extension outside.
• Run the vehicle for the minimum time required.  When possible, turn the vehicle off or move it outside.
• Leave the exhaust system and the air supply system on for a few minutes to clear any exhaust fumes which have escaped.
• Where possible, use shop air to charge vehicle air brake reservoirs rather than running the vehicle to charge the system.

Regulations, Standards and References
Occupational Safety General Regulations