I would guess that since the crews that actually had to work in them loved the C4500s and have been complaining about the ride and lack of comfort in the Terrastars since 2011, the department finally listened to them.
Also, the medium duty options are very limited. Since Boston EMS is not part of the fire department, they are not subject to the exemptions that the FD enjoys. The department would have to upgrade just about the entire department to CDLs for any vehicles with air brakes.
Also, the medium duty options are very limited. Since Boston EMS is not part of the fire department, they are not subject to the exemptions that the FD enjoys. The department would have to upgrade just about the entire department to CDLs for any vehicles with air brakes.