The 'W' is a general whistle indicator while the 'W/L' stands for Whistle for Level Crossing because there is unmanned crossing ahead The letter is also seen in Hindi with the characters 'see/pha' ie Siti Bajao Phatak') Normally W / L or C / F board is placed before the 250 meters of unmanned gateAdvanced level विशेषण Adjective उच्च स्तरीय ;Definition of level of effort in the Definitionsnet dictionary Meaning of level of effort What does level of effort mean?
Level Crossing Gate Meaning In Hindi Level Crossing Gate Ka Matlab