MARTA Commuter Rail

 (reporting mark MACR) is a commuter rail network owned by the and serving the. Service began in 1978.

The majority of trains originate at the system's major terminal in — Union Station — which offers connections to,  and MARTA bus.

History
In 1985, the first updates to the system were made, several new locomotives arrived, allowing more horsepower and thus, faster and safer travel, the original locomotives would still be active, but, with the exclusion of the F40PHs, they were often used during non-peak times. The line also dabbled in Nippon Sharyo Peachliner II cars, taking advantage of the lower wages in Japan compared to the US.

In 1998, MARTA received their first MPI F40PH-3C engine.

In 2011, MARTA Commuter Rail acquired a set of locomotives, which became their first dual-mode engines.

Athens, August 2004
On August 26, 2004, three people died and 23 were seriously injured when a CSX intermodal train collided head-on with a MARTA Commuter Rail train near Athens, Georgia. Both trains were on the same east–west track moving toward one another. The MARTA train had the right-of-way; it was supposed to switch to a southbound track. The CSX train was supposed to slow and stop just before the switch while the MARTA train passed, but the crew missed a signal one and a half miles back warning them to slow down. By the time the crew saw the red "stop" signal at the switch and the MARTA train, they were going too fast to avoid a collision.

The members of the CSX train crew and the signal operator were charged with three counts of accidental manslaughter and 23 counts of attempted manslaughter. The CSX train's engineer, native Saul Rocchetti, was found guilty and sentenced to 40 years in prison in 2006. He was released on parole in 2016, but died of a heart attack 4 days after his release.