Horizontal Gaze Nystagmus in Maryland

When an officer administers the Horizontal Gaze Nystagmus test on a driver suspected of driving while intoxicated, the driver must track a moving object (officer’s finger, pen, light, etc.) with his/her eyes while keeping his/her head stationary. The officer will watch for a wobble or jerk in the eye (nystagmus) as it follows the stimulus…

Ignition Interlock in Maryland

The Ignition Interlock Program involves installing an Alcohol Breath-Analyzed Ignition Interlock Device in the participant’s vehicle’s ignition system. Once installed, the vehicle will not start if an unacceptable level of alcohol is detected in the driver’s breath after blowing into the device. The Interlock program can be made available either optionally or as a requirement…