Diesel Engine Exhaust

A black truck driving on a road with black smoke coming from the tail pipe.

Diesel engine exhaust is on the Proposition 65 list for cancer.  

Proposition 65 is a California law that requires businesses to warn people before exposing them to a significant amount of a chemical on the state’s Proposition 65 list. Chemicals are placed on this list for cancer or reproductive harm (i.e., potential harm to a developing embryo or fetus, or to a person’s ability to have a healthy baby).

Read our Diesel Engine Exhaust fact sheet for information about how exposure to diesel engine exhaust can impact your cancer risk, with advice on how to reduce your exposure.

Proposition 65 benefits all Californians by reducing their exposure to chemicals that are on the list. You can learn more about the law’s impact by reading our webpage, Reducing Exposure to Proposition 65-listed Chemicals: A California Success Story.