The San Diego Police Department warned drivers who drink that they may encounter a DUI checkpoint Friday night.
The department said the checkpoint would be set up at an undisclosed location between 11 p.m. Friday and 3 a.m. Saturday.
Law enforcement experts say DUI checkpoints have been proven to reduce the number of persons killed and injured in crashes involving alcohol or drugs. Checkpoints are placed in locations where there have been previous collisions and DUI arrests.
Funding for the checkpoint is provided by a grant from the California Office of Traffic Safety through the National Highway Traffic Safety Administration.