Failures cause chaos on lines 11 and 12 this Thursday morning The circulation of lines 11-Coral and 12-Safira, which serve cities in Alto Tietê, began to be normalized late this Thursday morning (23), after problems that caused stoppages, partial operation and overcrowding at stations in the region. Despite the resumption of service, passengers reported long waits and difficulties getting to work and returning home. According to concessionaire Trivia Trens, Line 11-Coral returned to normal operation along its entire length. Line 12-Safira continued with partial operation between Tatuapé and Calmon Viana stations. As a result, the Antônio Gianetti Neto, Calmon Viana and Ferraz de Vasconcelos stations, closed in the morning, were reopened. ? Click to follow the g1 Mogi das Cruzes e Suzano channel on WhatsApp Biomedical doctor Amanda Lopes said she boarded at the Estudantes station, in Mogi das Cruzes, at around 6:40 am, but was still between Poá and Ferraz de Vasconcelos more than an hour later. According to her, the train had to reverse after passengers accessed the track. "They said that the train was going back to Calmon Viana because there were passengers on the track. Then they ordered the entire station to be evacuated because of a 'customer demonstration' on the track", he reported. LIVE: With train failures, passengers take risks on the tracks and even on bridges; WATCH Another passenger stated that he left Vila Olímpia at 7am and encountered problems when arriving at Luz station. "I took the train at Vila Olímpia and everything was normal. It arrived at Luz, all lines were stopped", he said. He managed to arrive at Calmon Viana, in Poá, only around 11am. Calmon Viana station, in Poá, was crowded this Thursday morning (23) Maiara Barbosa/TV Diário At Calmon Viana station, a trader who works there and preferred not to identify herself said that the movement began to change shortly after 5:30 am. According to her, hundreds of passengers stayed outside the station while waiting for information from the concessionaire or looking for transport alternatives, such as cars via app. "From the station door to the bus stop it was full. Lots of people calling Uber. Then, around 9:30 am, they started to allow entry again," he said. She also said that commerce was impacted by the large flow of people. "People came to have coffee, everything ended. It was crazy." According to Trivia Trens, a fault in a train caused an electrical incident between Brás and Tatuapé stations at around 5:40 am, affecting circulation. The concessionaire reported that it activated the Support Plan between Companies in Emergency Situations (Paese), with 36 buses to serve passengers, and requested the Metro to provide free transfers at Tatuapé and Corinthians-Itaquera stations. The company also informed that the priority was to guarantee the safety of passengers and restore operations in the shortest possible time. He also regretted the inconvenience and advised users to follow updates through official channels. Watch more news from Alto Tietê