Road restrictions in place ahead of the Olympics caused some long delays today, according to traffic information company Inrix.
It said there were delays of up to 90 minutes for drivers coming into London on the M40 due to a lane restriction on the A40 at Hanger Lane in west London.
Inrix added that a lane restriction on the A13 Newham Way in east London led to two-hour delays for traffic heading into London.
Also, yesterday there were 35-minute delays along the A12 because of the lane restriction now in place at the Lea Interchange in east London.
The lane alterations are part of the preparation for the full introduction on Wednesday of the Olympic traffic-only Games Lanes in London.
The 30 miles of lanes are part of the 109-mile Olympic Route Network.
London Mayor Boris Johnson and Transport for London have urged drivers to avoid central London for the period of the Games.