The first stretch of all-lane running (ALR) smart motorway - using the hard shoulder as a permanent live traffic lane - opened on the M25 in Hertfordshire ten years ago. (Stock Image) Read this story
The first stretch of all-lane running (ALR) smart motorway - using the hard shoulder as a permanent live traffic lane - opened on the M25 in Hertfordshire ten years ago. (Stock Image) Read this story
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