Operators are also required to provide a sensor functionality alongside an application for vehicles with a zero-one-two-star rating that demonstrates that the blind spot and moving off information systems have been fitted to comply with the standard set in our technical specification, and  are in functional working order.

This should comprise an official statement or letter from either the fitter or the original equipment manufacturer of the product being installed, to the effect that the sensors fitted to the vehicle are active and fitted in compliance with the approved technical specifications.  The letter should include a statement that certifies that “the blind spot and moving off information systems fitted to this vehicle are in compliance with the PSS technical specifications”.  This statement can be attached to your application along with the required visual evidence.