Driving Under the Influence of Marijuana

Ride along with Colorado cops sniffing out stoned drivers
1:45 | 09/11/14

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Transcript for Driving Under the Influence of Marijuana
Any marijuana the night. Them. Hey everybody it's -- send -- ABC news you know. Ever since recreational marijuana went on sale legally here in Colorado one thing that everybody has been wondering about what effect would be. On Colorado's highways. So tonight we are hitting the highway with the Colorado state patrol corporal Roger Myers is standing right over there just -- -- -- -- -- Marijuana valuations have gone up if you can't tell how close -- -- a car in front or you're feeling you have more time to stop. Do those things are affected. Blood and you can end -- in an accident. He's now doing a field sobriety test with a driver that he pulled over just a few minutes ago what I want to this puts -- let's put on July that your imagining right there -- But directly with -- -- could just like this -- he'll start your -- didn't all the and a white man with your -- your eyes only -- but this time we're just gonna go up. We're watching -- -- count backwards -- another 57. Another 43. All right so what I'm seeing it on my road signs and I -- -- -- -- from the marijuana cocaine and -- and bite journalism -- incident like -- eyes. Some have issues with that divided attention to ascertain the -- turnaround -- He's. Just putting the handcuffs on a driver that caught the -- -- attention. And he has decided. This person was apparently too stoned to drive.

This transcript has been automatically generated and may not be 100% accurate.

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