Extracting exhaust fumes of motor vehicles from the work area prevents them being released into the work environment and becoming a health hazard for the operator. A good exhaust extraction system has to collect the fumes at the production point (exhaust pipe of the vehicle) and has to convey them outside the building to be expelled into the atmosphere. Unfortunately, harmful gases such as carbon monoxide (CO), unburnt hydrocarbons (HC), and nitrogen dioxide (NOX), are cancerogenic and hidden killers. They are so impalpable and are so difficult to detect that they cannot be filtered but have to be removed by direct extraction.

A good exhaust fume extraction system must aspirated exhaust gases picking them to the source of production, before they can escape from the vehicle muffler. This is the reason why WORKY exhaust fumes extraction systems are shaped as big pipes attached to the muffler whence they withdraw directly all the exhaust fumes as soon as they are issued, carrying gases outside, pouring in the atmosphere.