Over regulation of speed causes severe bunching. We now do a lot of travelling on the section from M18J1 to M1J28(A38).
Traffic is appalling, even when people should be at work, and basically it turns into four lanes doing 60-65, with a lot of tailgating, especially in lane 4.
I don't see any way to improve this except maybe keeping HGVs out of lane 3...(it's a four lane stretch).
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) Plus 4