The parking lot in Woburn Center does not have curb cuts for accessibility from handicap parking spots.
Traffic is stretching back miles and miles even after the rollover has been cleared.
MassDOT is reviewing bids for the project, which was originally scheduled to have started last month.
The new rules would reduce the speed limit in 10 areas of Woburn designated as "vulnerable locations" under new state rules.
There were minor injuries in the accident which is causing major traffic back ups north of Boston.