Today20:51 BSTMap shows scale of the traffic problemsThere are artound four miles of slow or standstill traffic on the M6 southbound according to Google Maps data.There is heavy traffic on the M6 after two lorries crashedToday20:46 BSTDelays of an hour and a halfNational Highways is reporting delays of an hour and a half, up from an hour previously.The event is expected to clear between 11pm and 11.15pm, according to National Highways. This has already been pushed back and is subject to change again.