The hi-tech gadget keeps a watch on how well a car is driven, and the results are assessed every 90 days to set the cost of premiums.
Young drivers; those aged between 18 and 25 years old, will pay less if they consistently drive well.
The sting in the tail for boy racers is the insurer will cancel the policy if the black box records them driving at speeds that would mean a ban in court.
Premiums are calculated by monitoring:
- Braking and acceleration
- Whether the car is driven in the day or during the night
If the driver meets the set standard, the insurer will discount up to 11% of the annual premium.
Performance can be checked against a personal online dashboard that analyses statistics transmitted from the black box.
Such insurance for young drivers is provided by the Co-Op, which reckon the scheme will save 8 out of 10 youngsters up to £328 a year on motor policy costs.
David Neave, of The Co-operative Insurance, said: “It is a fact that many young people are simply being priced out of owning a car due to the escalating cost of motor insurance for young drivers.
“To ensure we do not end up with an entire generation priced out of car ownership we are giving them a chance to prove themselves as responsible drivers, and dispel the assumption that all young drivers will drive badly and have accidents.
“By using the Smartbox telematics technology we can actually see how a young driver behaves behind the wheel. This innovative technology will ensure that young drivers are given access to fairly priced motor insurance, with the added bonus that the better their driving, the bigger the Safer Driving Discount.”