The Santa Clara Police Department Traffic Unit is part of the Field Operations Division. The primary goal of the Traffic Unit is to reduce injury collisions through engineering, education and enforcement.

The Traffic Unit has authorized staffing of one Sergeant, ten Motorcycle Officers, one Traffic Investigator and two Community Service Officers. Their primary duties are to respond to enforce traffic laws, respond to collisions, investigate major injury accidents and fatalities. The Community Services Officers are responsible for the enforcement of parking violations. This team works closely with the City's Traffic Engineering Department to solve traffic issues.

Citizen traffic complaints can be reported online.