What criteria are used to determine whether a pedestrian crossing should be installed at any particular location on a trunk road.

A site being considered for pedestrian crossing facilities is assessed and designed using the Design Manual for Roads and Bridges (DMRB) Volume 8 Section 5 Part 1 (TA 68/96), Local Transport Note 1/95 The Assessment of Pedestrian Crossings and Local Transport Note 2/95 The Design of Pedestrian Crossings. These national documents are published by the Department for Transport and provide accepted standards for assessment, design and construction for use on trunk roads.