The conditions under which the person may be called on to read the number plate at 25 yards varies enormously.
No systematic assessment has been made, but the technical performance of automatic number plate recognition systems is kept under review.
The statutory eyesight standard for driving is the ability to read a car number plate at 20.5 metres.
The rear number plate must be illuminated by either a separate light, or by a light thrown from one of the other lights.
Of course, the real test is whether they can see what they need for driving—can they read a number plate at the specified distance?
The number plate of a trailer has to conform with the number plate of the tractor.
The regulations will in future require the details of the manufacturer to be recorded on the number plate.
Looking at the number plate enables him to approach the necessary authority to discover who owns the vehicle.