While there are some major differences in the way police handle cannabis-impaired driving and drunk driving, most court systems hand down similar consequences for both offenses. If the court convicts you for driving while under the influence of marijuana, you can expect the ramifications to include a license suspension, a drug and alcohol awareness class, fines, probation and even jail time.
However, the way the prosecution will build their case against you is very different with stoned driving. They cannot simply conduct a breath test after pulling you over to determine if you used cannabis recently.
For example, in Washington State, police have two options for proving a driver is under the influence of marijuana. These options are: