Policy information sourced from the Hillingdon Local Plan: Part 1
Pt 1.33
To promote the construction of new roads or the widening of existing roads only where they would: improve safety; promote pedestrian movement, cycling or public transport, or the improvement of the environment; reduce local congestion in a cost effective way; or are required to accommodate traffic likely to be generated by new development.
For more information please see Appendix 5 of the Local Plan: Part 1