Officer Explains Tuning Fork Calibration

Officer Matt Nazzaro demonstrates how Cranford police calibrate speed radar using tuning forks during a Citizens' Police Academy ride along Thursday night.

This calibration defends the officer in court if the speed reading is challenged.

Patrol officers are required to monitor town roads for speeding and other violations.

"We're all certified in this," Nazzaro said. "We have to get recertified. It's not just something you get and get rid of. It's just like everything else, our training, our shooting. Every bit of our training we have always recertify and keep up on our skills."