Global Positioning Systems (GPS)
Snooper Truckmate Bridge-Saver Low Bridge Alert System with 5" LCD Touchscreen
Truckmate BridgeSaver Low Bridge Alert System with 5" LCD Touchscreen - Snooper S5100-BridgesaverSet the height & width of the vehicle and the driver will be alerted before reaching an impassable bridge or tunnel. The easy to read 5” LCD displays...
https://www.bizrate.co.uk/globalpositioningsystemsgps/snooper-truckmate-bridge-saver-low-bridge-oid24215899475.html