DRIVERS in Kent will face new roadside tests by police to check whether they are under the influence of drugs.

Since December 1, Kent County Constabulary have been using a five-stage "field impairment test" for drivers who have been stopped for driving erratically or dangerously.

Drivers asked to take the test for being under the influence of drugs are those who test negative for alcohol but who officers believe are unfit for driving.

The test monitors the drivers ability to divide his or her attention. For example, during one of the stages the motorist will be asked to tilt their head back slightly, close their eyes and estimate the passage of 30 seconds.

If the driver fails the test or refuses to take it, the officer can arrest the driver and take him or her to a police station for medical examination.