Driving while under the influence is a nationwide epidemic. Impaired driving is not limited to alcohol; it includes marijuana, synthetic drugs, and prescription pills known as opiates. The Los Angeles Times reported that the San Diego police are using new methods to confirm the condition of a driver who is suspected of driving under the influence of drugs. The two Drager Drug Test 5000 machines, commonly known as the mouth swab, cost about $6,000 per machine. The machine tests for seven different drugs including cocaine, methadone, methamphetamine, marijuana, benzodiazepines, and amphetamine. It is a concern with the passing of the legalization of marijuana that the likelihood of impaired drivers will increase. Like the breathalyzer, a driver can refuse to take the Drager Drug Test. In 2014, California had 38% of drivers who were killed in motor accidents by drivers who were impaired by legal or illegal drugs. That is a 32% increase from the previous year. By placing checkpoints throughout San Diego, the goal is to get impaired drivers off the road.