Value metric
17.3.2.1
Specify in metres to one decimal place for height and width restrictions, tonnes (to one decimal place if necessary) for weight restrictions.
17.3.2.2
Automated conversions to calculate values should not be done.
17.3.2.3
The Value must be recorded in the same way as the restriction appears on the Traffic Regulation Order, which in most cases is the same as is displayed on the road sign.