Council Directive of 26 July 1971 on the approximation of the laws of the Member States relating to the braking devices of certain categories of motor vehicles and of their trailers (71/320/EEC) (repealed)

[F1Diagram 4A U.K. Semi-trailers U.K. (see point 4) U.K.

NB: U.K.
1. It is understood that, between the values and U.K.

it is not necessary that there should be proportionality between braking rate

and the control line pressure as measured at the coupling head.

2. The relationship between the braking rate U.K.

and control line pressure for the laden and unladen condition is determined as follows:

The factors K c (laden), K v (unladen) are obtained by reference to diagram 4B. Contruct the laden und unladen bands by multiplying the upper and lower boundaries of the band in diagram 4A shown above by the two factors obtained, K c and K v respectively.]