|Route outline (key)|
||London – Maidstone – Folkestone
||Folkestone – Dover
||Dover – Dover Station
|This article is about the T4 of the sequential numbering system for British Trunk Roads.
For the T4 of the A road-based numbering system, see T9 (Britain)
The T4, also called T2 or T20, was a British Trunk Road created in the 1936 Trunk Roads Act. It ran from London to Dover via Folkestone.
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