In many parts of the world, talking on a cell phone while driving is prohibited, but traffic police are often unaware that the driver is using a file.
Work is underway in the UK on a system that warns drivers if they use a mobile phone while driving.
The system is now being used experimentally on a highway in the Norfolk area near London.
The system is in contact with the driver’s mobile phone.
The system, developed by West Catech, has a scanner that detects signals transmitted from a mobile phone during a telephone conversation.
When the driver is talking on a cell phone, a roadside light turns on and off and warns the driver.
The system can distinguish between radio, Bluetooth and mobile signals, according to the company Westcast.
Bluetooth connectivity is legal in the UK because if a driver uses Bluetooth, the signal will not ring.