Page:UK Traffic Signs Manual - Chapter 8 - Part 1 (Traffic Safety Measures and Signs for Road). Designs 2009.pdf/99

SIGNING PRINCIPLES Lane open to traffic.

Lane open to any vehicle. The x-height is 125mm, which is equivalent to a capital letter height of 175 mm.

Lane subject to a temporary weight restriction. The roundel is 750mm in diameter. This must be increased to 900mm diameter when used in conjunction with a symbol to diagram 7283.1 or 7284.1.

Lane subject to a temporary width restriction, with width indicated in imperial units. The roundel is 750mm in diameter. This is not to be used in conjunction with a symbol to diagram 7283.1 or 7284.1.

Lane subject to a temporary width restriction, with the width indicated in both metric and imperial units. The roundel is 900mm in diameter. If combined metric and imperial units symbols are used on a sign then all prohibitory roundels on the sign must be 900 mm diameter.

Lane subject to a temporary height restriction, with the height indicated in imperial units. The roundel is 750 mm in diameter. This is not to be used in conjunction with a symbol to diagram 7283.1 or 7284.1. 98