MBTA officials are investigating how a bus went off the road and into a ditch Tuesday morning on the Chelsea-Revere, Massachusetts line.
Authorities said the bus driver crashed off Route 1, past Route 16, at about 8 a.m.
The driver told MBTA officials that he was going 30 mph while making a turn when slick road conditions caused him to fishtail. He then ended up in a ditch, his bus almost turning in the opposite direction.
Neither the driver nor the five passengers on board were hurt.
The passengers were transferred to another bus while the bus that was stuck in the ditch was towed from the scene.
The exact cause of the crash remains under investigation.