Southall railway station on the A3005
The A3005 starts on the A4020 (former A40) in Southall. It heads south, crossing the railway line, and is then forced east at a roundabout onto the Southall Village bypass, which still seems less built up than the rest of the route. At a roundabout just before the canal, it rejoins its original route. It zigzags before going under the M4 then crosses the A4 a quarter of a mile later.
The A3005/A4 junction is a complicated one where traffic is only allowed to turn left or go straight on. However, a link road on the south side of the A4 doubles back to meet the A4 again to fill in the prohibited movements - for A4 traffic this is the only way of reaching the A3005 southbound.
South from this junction, the A3005 crosses the railway line by Hounslow Central station before being forced right to end on the A3006. Its original route was straight on to end on the A315 Hounslow High Street but this is now pedestrianised.