Leipzig's Trams Are Running — Expert Investigates Heat Damage

Following the severe heat damage and the suspension of service for several days, nearly all trams in Leipzig are now running again. The cause of the damage is currently under investigation. “The expert we commissioned began his work last week. He has announced that he will present the initial findings of his investigation by the end of August,” said a spokeswoman for Leipziger Verkehrsbetriebe in response to an inquiry.

The expert from TÜV Süd is taking material samples and investigating, among other things, why the joint compound melted in some places but withstood the heat in others.

The weekend before last, tram service in Saxony’s largest city was completely suspended. According to LVB, extreme heat with temperatures around 40 degrees had softened the joint compound in many places along the tracks. The trams had pushed the joint compound out and spread it across the tracks and switches with their wheels—forming a layer up to five millimeters thick. The compound hardened again, causing the rails to stick together and also damaging the vehicles.

Joint sealant is being analyzed—adjustments due to climate change

“Together with our expert, we are carefully evaluating the joint sealant from both the damaged and undamaged track sections,” the statement continued. The installation of new joints has been suspended for four weeks. “Until then, we are evaluating recognized technical solutions for joint sealant as well as the installation process, and we are consulting with transit companies from across Europe on these matters.” Similar damage had also occurred in other cities such as Nuremberg and Essen.

From the LVB’s perspective, climate change—with its recurring heat waves—will ultimately require the industry to develop adapted solutions. The spokesperson did not specify what those might be.

Residents spent days clearing the tracks

With the help of Leipzig residents, the stuck tracks were successfully cleared after days of work. As a thank-you for the public’s help and understanding, the LVB is offering free rides this week through July 12: Anyone with a valid ticket can bring one additional person along for free on trains and buses within the city limits. This does not apply to S-Bahn and regional trains.