Two trams collided on Rotterdam’s Erasmus Bridge, with video showing one tram ramming into the rear of another and causing debris to scatter across the roadway. About 15 people were injured, one seriously, and the seriously injured passenger was taken to hospital as emergency crews evacuated others. Authorities initially reported 18 injuries but later revised the figure to 15, and the bridge was closed to traffic while investigations into the cause proceeded. The Rotterdam public transport operator RET said it was cooperating with emergency services and expressed shock at the incident. One tram derailed in the incident, and a large-scale emergency response was underway to treat the injured and secure the area. The crash disrupted tram service on the Erasmus Bridge, a major transport link across the city, as officials scrutinize how it happened.