It's buses all the way down as the T replaces B Line trolleys after one came off the rails at Packards Corner around 2:10 p.m. Lipistickey surveyed the damage, can only marvel: Whoops.

The trolley was still there at 5 p.m: Read more.

The MBTA reports delays of up to 20 minutes on the outbound B Line due to a trolley at Warren that thought it could, but it couldn't.

A roving UHub photographer captured the scene along Commonwealth Avenue at Chiswick Road when a driver realized he could not occupy the same space as a Green Line trolley shortly before 6:45 p.m. The T was forced to bustitute for about a half hour until the car and the trolley could be removed.

The Boston Fire Department reports firefighters and Transit and Boston police officers worked to free a woman who somehow wound up trapped under a trolley at BU Central around 11:40 p.m. on Friday. NBC Boston reports the woman suffered serious injuries but is expected to survive; adds officials did not say how she got under the trolley but that it does not appear to be due to an fault by either a T worker or the trolley.

The MBTA reports delays of up to 15 minutes on inbound B Line trolleys due to a recalcitrant trolley at Sutherland Road.

The T reports delays of up to 15 minutes on the inbound B Line due to a trolley with "a mechanical issue" at Chiswick.

The MBTA reports it's rolled out some shuttle buses to get riders between BC and Washington Street on the B Line because of a deceased trolley at South Street.

Update, 9:32 p.m. MBTA says service has resumed, but with delays.

Shortly before 3 p.m. sparks exploded atop a B Line trolley at Park Street. Don't worry, though: No fire - and definitely no shots fired - although the station filled with some light smoke. Read more.

Ari Ofsevit spotted a car on the B Line tracks and the driver who put it there, on Commonwealth Avenue outbound, just past Chestnut Hill Avenue, tonight.

The MBTA reports delays of up to 15 minutes on the inbound B Line due to a trolley with "a mechanical problem" at BC, and delays of up to 15 minutes on the Orange Line between Oak Grove and Sullivan, due to a similarly disinclined-to-move train at Wellington. Read more.