Yes, you can get a DUI if you are caught driving under the influence of marijuana in California, just like any other controlled substance. If the officer believes you are under the influence of marijuana they will administer a field sobriety test which will check and monitor your behaviors. If you fail this test you will be arrested and charged with a DUI or some equivalent. Marijuana is treated roughly the same as alcohol.
Yes you can receive a dui if pulled over after smoking weed in California. At this time they perform a field sobriety test, check your appearance, check for weed paraphernalia to determine if you are under the influence of weed. They can also administer a chemical test but it is not necessary. Your obvious impairment will determine if you are too high to operate a vehicle.
The California Vehicle Code states that you are guilty of DUI if your marijuana use makes you impaired. This is vague, of course, and is determined by the officer in most cases. For instance, he or she can issue field sobriety tests, make determinations based on your behavior or appearance, etc.One thing to note, though, is that California law does state that driving under the influence of alchol AND drug is illegal. So, a beer and a few hits can lead to DUI for sure.