User:Amazing factswith sachin

aap sabhi ne train me 'x' aisa nishan dekha hoga. Magar kya aap jante h aisa kyu diya jata h? to chaliye ham batate h train me sabhi dibbe ek dusre se connect rahte h. Agar inke jurav me koi khami nikal gayi to train ke kai dibbe piche chhut jayenge or Train ka safar bahut lamba hota h. aise me train diver ko bi nahi pta chal payega ki dibbe piche chhut gaye h. Isi vajah se pichle dibbe me 'x' nishan diya jata h taki relwe karmchari ko pta lag jayega.