An RPF personnel holds up a placard telling commuters to keep calm and walk in a single line, during a crowd management trial ahead of the monsoon, at Parel station. Pic/Datta Kumbhar

The Army-built bridges at Parel and Currey Road stations haven't got a lot of footfall, and hence, the Central Railway yesterday said it will appeal to commuters, by holding placards or broadcasting on speakers, if necessary, to use these crucial bridges in case of excessive crowding on a single bridge at these stations.