Running re-test

Running re-test

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The running re-test is also known as rolling retest; it is a feature requiring a repeated breath test that the driver must continue to perform at random intervals once the vehicle has been successfully started. The purpose of the running re-test is to prevent the driver from drinking once the vehicle has started and the engine is idling, and to detect a rising BrAC level in the driver once the vehicle has been started.

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