Weird traffic

Okay, what is it with traffic at the moment? Every day since the clocks went back there's been long queues out of Fareham to the motorway in the morning, and there seems to be a lot of accidents over the past few days. Yesterday there was at least three shunts on the M27 (one westbound north of Portchester, one eastbound in the same place, and another over at Whiteley), and today I spotted two separate crashes and a broken down car just in the short distance between Sainsburys and my flat.

I recall reading that there is a noticeable uptick in the number of accidents in general just after summer time ends, before everyone gets used to it getting darker earlier in the evenings. That would explain the evening shunts but not the extra queues in the morning. Maybe something odd's going on with the smart motorway stuff on the M27?