The Hanover County Sheriff's Office has 2 mobile radar trailers. These trailers are utilized during weekdays in areas following a citizen complaint of speeding, or in other areas known for speeding problems. With an on-board computer, the trailers document:

• Location
• Number of vehicles
• Speed
• Time
• Weather

The on-board computer data is later downloaded to a laptop. This information is utilized to determine the best time for enforcement action.