Medic says the rider was taken to the hospital with life threatening injuries.
The accident happened near the East/West Station on Camden Road in South End. According to CMPD, the ATV rider passed a stopped vehicle and ignored the traffic control gates and lights.
The rider crossed into the path of the train and was struck. Police say the rider was not wearing a helmet, and speed and alcohol are not considered factors in the collision.
The ATV rider will face charges, CMPD says, once they are released from the hospital.
LYNX Blue Line services were disrupted Monday night due to the accident. Passengers were bused around the accident using the Carson and New Bern stations.
Services returned to normal around 11pm.