There are two ways to get in touch with the DART Police by phone:

DART PD Dispatch 214-928-6300 or through 911, via transfer from Dallas PD, or whatever city you are in.

I do not recommend the 911 since a person consuming alcohol is not necessarily an emergency situation. Just contact the DART Police through their dispatch number, give them the bus number and bus route number, give a description of the person or persons involved, and give a call back number. If the person gets off the bus, a call back will help for locating the offender.

Also, if you are on a train, the same procedure applies, just give a direction of travel (north or south), what train line you are on (red/blue/etc..), and the station you are heading to or just left. Again, a call back letting dispatch know if the person got off the train will help officers locate the offender.

Hope that helped you out. The DART PD Dispatch number is posted on trains, buses, and stations. The DART Police are on duty 24/7 and you will get a live voice when you call. Unfortunately, you either got the main DART line or the DART Police Headquarters line, of which you will most likely not get live voice after business hours.

NewGuy out.