The transport company informs passengers about the limitations of the technology and asks for their support in troubleshooting
The ongoing heat wave is posing major challenges not only for passengers but also for the technology in public transport. Against this backdrop, HEAG mobilo is providing information on how the air conditioning systems in its trams work and offering tips on how passengers can travel as comfortably as possible even on very hot days.
The air conditioning systems in the ST14 and ST15 tram series ("TINA") are designed to noticeably lower the interior temperature compared to the outside temperature while simultaneously providing a continuous supply of fresh air. However, unlike in a car or enclosed spaces, the doors are opened at almost every stop during regular service. This results in warm outside air regularly flowing into the passenger compartment.
When outside temperatures are well over 30 degrees Celsius, air conditioning systems reach their physical limits. Under these conditions, a significant cooling of the interior cannot always be guaranteed. HEAG mobilo points out that keeping doors closed as much as possible significantly contributes to maintaining cooling performance.
The air conditioning systems of the TINA trains are being further optimized
Together with the vehicle manufacturer Stadler, HEAG mobilo investigated the problems with the air conditioning systems of the TINA trams that occurred in recent summers. The air conditioning systems were technically overhauled and are now back in regular operation.
Nevertheless, occasional outages still occur. According to HEAG mobilo, these should be resolved in the future by a software update currently under review. The systems are continuously monitored and evaluated.
Passenger reports help with troubleshooting
HEAG mobilo requests that passengers report air conditioning malfunctions via the online fault reporting system on the transport company's website. Information such as the vehicle number, the specific carriage section, the route, and the time is particularly helpful. This allows for targeted inspection of vehicles with noticeable issues and faster resolution of any technical problems.
Tips for driving in extreme heat
HEAG mobilo recommends the following for the most pleasant journeys possible:
- Drink plenty of water and take water with you
- Avoid peak times if possible
- Avoid choosing seats directly next to frequently opened doors
- Avoid sitting by windows facing the sun if possible
- If necessary, move to a cooler part of the vehicle
- Pay attention to fellow passengers and offer a seat to people in need of assistance.
Should medical assistance be required during the journey, the driver can be contacted via the talk button on the doors.
HEAG mobilo generally recommends planning journeys outside of the hottest part of the day, between 12 pm and 5 pm. The company thanks all passengers for their understanding during the ongoing heat wave.
(DARMSTADT – RED/HEAG)
Featured image: HEAG MOBILI)
