The Open Guide to London: the free London guide - Differences between Version 5 and Version 4 of Red Routes

Contents are identical

A peculiarity of London, red routes are marked with a double red line, in the style of a double yellow line, indicating that it is illegal to stop your vehicle there other than at traffic lights or in a queue of stationary traffic.

Examples of red routes include the A1 from St Pauls through Islington and Archway.