Journey time surveys are surveys generally undertaken by two people, with one person driving and the other recording the journey time between pre-determined timing points along the route. Such surveys involve the driver endeavouring to drive at the average speed on the given route. Journey time surveys are generally undertaken a number of times in each direction throughout the day and by more than one vehicle where possible. Any unusual activity along the journey time route – eg temporary traffic lights, accidents etc are all noted down in order to understand how well the journey time represents a ‘typical trip’ along that road.

In the model, journey time analysis is used for the validation of TMfS. This technique involves comparing the journey time between two points in the model against a set of observed journey times.

To view the journey times routes used in TMfS:07 please visit the maps section.