Research has revealed that the M606 in Bradford has the slowest average speeds in the country, with drivers reaching just 24mph on a typical journey.
The M621 in Leeds was in fourth spot, with an average speed of only 26mph. Two other major routes through Yorkshire, the M62 and M1, averaged 39mph and 43mph respectively.
The results were calculated by RAM Tracking, which fitted speed monitors in commercial vehicles using the national motorway network.
Chris McClellan, CEO at RAM Tracking said:
“Our tracking software has been specifically designed with the fleet manager in mind.
“This study has been beneficial for both us as a business as well as enlightening for customers. We have discovered some fascinating statistics that will continue to help businesses up and down the country, by showcasing the slowest motorways nationwide. Our customers can access key live information about their vehicles, wherever they are in the world.”