Since marijuana is now legal in several places, cops have been forced to come up with ways to tell if you are driving under the influence. The fact that there are no direct tests to determine if someone is driving under the influence has forced the police to come up with some exciting ways. In places where marijuana has not been legalized yet, it is an offense if you have it in your car or system. Cops are working on finding ways to determine if the drivers that are pulled over are driving under the influence of marijuana. By reading more here, you can learn about what a cop will do if they suspect you are under the influence.
The first option they can use is the breathalyzer. There are presently no breathalyzer tests that can tell if someone is under the influence. This is attributed to the fact that the marijuana in your system does not correlate in any way with your impairment. Unlike alcohol, the level of impairment caused by THC cannot be measured using a simple drug test. A marijuana breathalyzer that can be used on people suspected of being under the influence has been reportedly invented by a California doctor. We are still not sure of whether it will be used in the future although it is not being used as of now. If a police officer has suspicions that you could be under the influence, they may have you take a breathalyzer test, but it will most probably be for alcohol.
A urine test is another option that they could use. In some areas, you automatically consent to a urine test if the officer on duty suspects that you could be under the influence. You may be requested to provide a urine sample especially if the officer believes that you are driving under the influence. This one also comes with its demerits. After you have smoked it, THC can remain in your body for a few more days, and this poses a real challenge. It may not be enough to incriminate you if the officer fails to prove that you failed a field test or had other indications of being high.
By using a mouth swab, an officer can determine if you are under the influence. Just like the others, these tests are not any accurate either. This poses a challenge since officers cannot use them to prove that you are high. If a police officer has no other source of proof, it is almost impossible to charge you for driving under the influence.