Metro Transit wanted a way to get buses through traffic more cost effectively. At the same time, MnDOT was looking for ways to make better use of of existing lanes.
They experimented with bus-only shoulders along Highway 252 and liked the results: bus drivers could stay on schedule, commuters got to work or home faster and ridership increased. Even better, bus-only shoulders cost a fraction of added lanes.
MnDOT found that by allowing transit vehicles to use shoulders, they could move more people more quickly with minimal investment. Now, as roadways are built or reconstructed, shoulders are made to accommodate the extra weight and width of a bus.
via Metro Transit.