Good news for TomTom owners in London. TomTom is extending the functionality of its Map Share service to help you avoid Olympic travel disruptions while you're there.

TomTom's map experts predict that July 28 is likely to be the most disrupted travel day, when more than 9000 road changes in London will be introduced. The next most congested day is likely to be August 1 when more than 3000 changes will be made.

TomTom has created a map task force to process map changes related to temporary road closures, changes in traffic flow and additional turn restrictions as they happen across the capital. TomTom will make these dynamic map changes available to its customers via Map Share on a daily basis.

TomTom has worked closely with key stakeholders to capture and share most road changes.

"For the thousands of Australians making the trip to London to cheer on our Olympic hopefuls, TomTom is focused on making their journey as easy and stress-free as possible – especially at a time when the city is even more bustling than usual," said Tom Brown, TomTom's UK Country Manager.

"To help, TomTom is providing the most up to date map available, which will take into account the dynamic road changes resulting from the Olympics. All of this is aimed at giving our customers the best navigation experience possible during their visit."

TomTom map experts will continuously process map changes in and around London throughout the sporting season. After 6pm every day, TomTom customers will be able to download the following day's road changes to their navigation device and reset any changes no longer required from the previous day for free.

Map Share is available free of charge to all 65 million TomTom customers worldwide. It allows drivers to personalise the map on their own device, share their changes with the community and receive around 250,000 road changes per month from other users.