The M65 connects the towns in Lancashire's Calder Valley, from Preston to Blackburn, Burnley and on to Colne. It might not be a critical national route but it's a lifeline to the region it serves.
If there's trouble crossing the Channel, you'll see the lorries queuing on the M20. What is Operation Stack? Why does it cause so much trouble? And why, more than twenty years after it started, are we still using it?