A13 West bound includes a complex construction for the toll gate (Peage).This is not consistent with other Peages. For example there is not a similar construction on the East bound A13 or on the slip roads off the A13 on to the D400. This causes a problem for the GPS because it thinks its quicker to leave the West bound A13, up the slip road to the D400, then re-join the West bound A13, which is not correct.