MADERA – Madera Police Department will hold a DUI/DL Checkpoint on August 14th from 7:30 p.m. to 2:30 a.m. at an undisclosed location within the Madera city limits. Checkpoint locations are chosen based on a history of DUI crashes and arrests. The primary purpose of checkpoints is not to make arrests, but to promote public safety by deterring drivers from driving impaired.