Location : The junction of the A414 and the A1M .

Location : The M40 northbound exit slip at junction J4 .

Location : The A1 southbound between the A14 and the junction with the A428 .

Location : The M4 SPUR southbound between junctions J4 and J4A .

Location : The A47 eastbound between the junctions with the A1075 and the A1074 .

Location : The A47 westbound between the A140 and the junction with the A1074 .

Location : The A34 southbound between the junctions with the M40 and the A44 .

Location : The A34 northbound between the junctions with the A44 and the M40 .

Location : The M40 northbound entry slip at junction J9 .

Location : The M40 northbound between junctions J8A and J9 .

Location : The M4 westbound entry slip at junction J12 .

Location : The M4 westbound between junctions J11 and J12 .