Tamaqua patrolman Corey Herring prepares to use an ENRADD speed timing device on East Broad Street on Tuesday. The Electronic Non-Radar Detection Device measures speed wirelessly without the use of radar, making it legal for local police departments to use as the Pennsylvania Legislature debates the issue of radar use by anyone other than state police. The system has two devices, which are placed on either side of a road. One unit has two transmitters spaced at a certain distance and the other unit has two receivers spaced at the same distance. When a vehicle drives by, the tire will break the first beam, causing the ENRADD to start a timer. When the vehicle tire breaks the second beam, the ENRADD stops the timer and calculates the speed. Tamaqua Police use the device as part of the Schuylkill County/Pennsylvania Aggressive Driving Enforcement and Education Project.