A train collision with a semi truck at the Sable Boulevard crossing caused a disruption for many travelers on RTD's A Line on Monday.

A Regional Transportation District train and a tractor-trailer collided in Aurora on Monday, temporarily shutting down RTD’s commuter rail A Line, officials said.

A Regional Transportation District A Line commuter rail train collided with a semitrailer in Aurora on its way to Denver International Airport Monday morning, prompting extended street and train line closures.