Caltrans workers and the California Highway Patrol will be out in force today on highways throughout the state, installing “Move Over” signs intended to help save lives and increase safety for motorists, highway workers, CHP officers, and other law enforcement and first responders.

Highway construction and maintenance work is one of the most dangerous occupations in the United States. Since 1924, 178 Caltrans employees have been killed on the job.

The Move Over law, which took effect in 2007, was amended in 2009 to add Caltrans vehicles displaying flashing amber warning lights to the list of vehicles for which motorists must move over if safe to do so, or slow down.