TEXRail trains are not diesel locomotives or heavy rail like the TRE trains. The rail cars to be used on TEXRail are called Diesel Multiple Unit (DMU) self-propelled passenger rail cars. These are the same cars used by Denton County Transportation Agency’s A Train.
Studies have shown that this DMU type of train creates 72% less pollution and 75% less noise than a standard locomotive. The TEXRail Environmental Impact Statement (EIS) shows that the sound level for these trains at full throttle is under 75 dBA at 50 feet (equivalent to the sound of a household vacuum cleaner) and below 50 dBA at 100 feet (equivalent to the sound of a normal level conversation). In addition, the railroad bed is being reconstructed and new concrete rail ties installed. This will reduce the sound and vibration coming from the track itself.