The Bridgwater Electronics SpeedGenie and Transcend's DrivePro 220 Car Video Recorder are devices that can help drivers monitor their speed. Other speed limit alarms include the Rx4Speeding SpeedWatcher GI, Rx4Speeding SpeedWatcher GX and Valeo Speed/Visio.
The Bridgwater Electronics SpeedGenie is a one-button programmable automotive speed alarm. When the vehicle speed exceeds the limit set by the user, the SpeedGenie emits an audible alarm. The alarm continues until the vehicle returns to the proper speed.
Transcend's DrivePro 220 is an automotive video camera and speed alarm. In addition, it can take snapshots and has a GPS feature that logs travel routes. Other features of the DrivePro 220 include frontal collision avoidance and lane change alarms.