How fast are UK roads really, and what causes delays?

The Department for Transport publishes regular data on how traffic actually moves across England's road network, covering average speeds, how much delay drivers experience and how reliably they can predict journey times on both the Strategic Road Network and local A roads.

The Strategic Road Network includes motorways and major A roads managed nationally, while local A roads cover the routes most drivers use every day for commuting, school runs and local errands. The data shows that conditions vary considerably between these two types of road, and that delay is not just about congestion at peak times but also about how predictably a driver can rely on a route taking roughly the same time each day.

For everyday drivers, this kind of information matters because unreliable journey times affect real decisions, from how early to leave for work to whether a van driver can commit to a delivery window. When roads perform poorly for reliability, it is not always because they are slow on average but because the variation from one journey to the next is wide, making planning genuinely difficult.

Maintaining a vehicle in good condition is one of the few things a driver can control when roads themselves are unpredictable. A car that is properly serviced, with tyres at the right pressure and brakes in good order, responds better in heavy traffic and is less likely to add to congestion through a breakdown. If your car is due a service or MOT and you want a straightforward way to find a trusted independent garage and book it directly, Garage.co.uk lets you do exactly that, with no fees or commission involved.