Dublin! Not Dallas!
The DART is a good thing.

The Dublin Area Rapid Transit is an electric train which runs about every 15 minutes from Bray to Howth, and vice versa, along the east coast of Dublin City. Most of the carriages are green (this being Ireland), but there is the occasional sponsored carriage which is adorned with advertising logos and whatnot.

Recently the range of the DART has been extended down the coast to Greystones, although trains to and from the station there are less regular.

Even more recently, the carriage interiors have been redesigned to provide more standing room. Unfortunately, the seats have also been redesigned, making them even more uncomfortable.