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DENVER -- The Colorado State Patrol will unveil its new marijuana testing program on Tuesday.

It's designed to to find the best way to discover if motorists are driving high. The CSP is testing five devices that will be able to detect pot in someone's system.

One of the devices will check saliva for marijuana and other drugs. The CSP has trained 125 troopers in the new technology.

The state's Attorney General's Office has paid about $250,000 to buy the devices and every CSP field office will have at least one.

State lawmakers have set the legal limit of 5 nanograms of THC in the blood system. The goal is to get an accurate reading from drivers.

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