M25 J3 Swanley Interchange

Layout and signage

London
A20
Maidstone
Channel Tunnel
M20 Link
Swanley
B2173
 

A20

B2173
   

M20

A20
  Maidstone
Channel Tunnel
Dover
M20 Link
London (SE)
Swanley
A20

Lane configuration

LanesLanesLanesLanesLanes

  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.

LanesLanesLanesLanesLanes

  • Lane 1 continues, with option to exit.
  • Lane 2 continues ahead.
  • Lane 3 continues ahead.

Other events

  • Signs Variable Speed Limits apply
  • Signs National Speed Limit begins