including for train passengers. it is network rail s job to including for train passengers. it is network rail sjob to monitor the thousands of miles of railway track up thousands of miles of railway track up and down the country for anything that could make it unsafe for trains to run. so every system that you are looking at is affected in some way by the weather. you will see the signalling equipment, we need to mainge make sure that they maintain temperatures. we need to maintain power lines, because if the wires aside, they catch on top of the train. ~ ., , ., ., ., train. when the rails get too hot, the metal can train. when the rails get too hot, the metal can walk. train. when the rails get too hot, the metal can walk. they - train. when the rails get too hot, the metal can walk. they are i the metal can walk. they are engineered to cope with britain s normal temperature range. last year s heatwaves tested the network s resilience. ladle year s heatwaves tested the network s