A NORTH-WEST company says it has found the perfect way to help drivers keep to the speed limit.

Benfells in Blackpool has designed a device that sounds an alarm every time the car exceeds the speed limit.

Michael Leigh, managing director of Benfells, says its Speed Guard device -- which is fitted to the dashboard -- will encourage drivers to stick to the law.

Figures for Lancashire show around 30,000 drivers were convicted of speeding offences in 2000.