Chiswick Roundabout is the place where the North Circular Road meets the [South Circular]? Road (The other point where they would conceivably meet is in the middle of the [Blackwall Tunnel]?).
Chiswick Roundabout is also the start of the [M4]? motorway. Westbound prohibited traffic is directed to the off-ramp, and onto the roundabout.
It's an excellent spot for lifts if you are hitch-hiking. There is a stretch of a few hundred yards of westbound A4 with lay-bys before the on-ramp to the M4.
Last edited 2003-12-17 17:33:26 (version 1)