M1 Bedfordshire, southbound between M1 J10 [M1 junction 9] and A5
M1 Bedfordshire - Heavy traffic on M1 southbound between M1 J10, Luton Airport Spur Road and J9, A5 (Redbourn).
M25 Hertfordshire, anti-clockwise between M1 [M25 junction 21] and A41 [M25 junction 20]
M25 Hertfordshire - Queueing traffic on M25 anticlockwise between J21 M1 and J20, A41 (Kings Langley).
M25 Hertfordshire, anti-clockwise between A412 [M25 junction 17] and M40 [M25 junction 16]
M25 Hertfordshire - Queueing traffic on M25 anticlockwise between J17, A412 (Maple Cross) and J16 M40.
A1M Hertfordshire, southbound at A602 [A1(M) junction 7]
A1(M) Hertfordshire - Heavy traffic on A1(M) southbound at J7, A602 (Stevenage).
A1 Barnet Way Barnet By-Pass Borehamwood, southbound between A411 Barnet Lane and A5100 The Broadway
A1 Greater London - Slow traffic on A1 Barnet Way (Barnet By-Pass) southbound in Borehamwood between Stirling Corner and Mill Hill Circus.
A5 Dunstable, southbound between Dunstable Road and B4540 Lynch Hill
A5 Bedfordshire - Heavy traffic on A5 southbound in Dunstable between the Dunstable Road junction and the B4540 Lynch Hill junction.
A41 Kings Langley, southbound between A414 Two Waters Road and M25 J20
A41 Hertfordshire - Slow traffic on A41 southbound in Kings Langley between Hemel Hempstead Turn Off and Kings Langley.
A405 North Orbital Road Bricket Wood, both ways at M25 J21A Roundabout
A405 Hertfordshire - Queueing traffic on A405 North Orbital Road in Bricket Wood at the M25 J21a Roundabout junction.