London Mayor Boris Johnson claims to have cut serious disruption from roadworks in the capital's streets by 40%.
According to new figures from TfL there were nearly 4,000 fewer roadworks between April and the end of 2011. This cut disruption by 182 hours.
The improvement comes after a new permit scheme was introduced for roadworks and the public were given access to a new online scheme to report disruptive or badly managed repairs.
This included road blocks where no work seemed to be being carried out and saw 2,200 reports from the public.
Boroughs using the permit scheme have seen a 17% reduction in utility works compared with a 7% reduction in boroughs that do not issue permits.
Further measure are being planned ahead of the Olympics including revisions to a code of conduct for utility companies.