When Ally gets off the train at the station before she was supposed  to, she decides to walk the little way to the next rather than wait 40  minutes for the next train. She figures with it being very   quiet with one single track, she'll be quite safe, it's a lovely day  and besides she can have some fun along the way! 
               Ally walks a little way down the tracks before pulling a diaper out of her bag. 
               "I bet no ones ever diapered themselves on the railway track" she  thinks to herself with a cheeky smile spreading across her face. 
               Once her diaper is on and taped up, the feeling of it's thickness  between her legs starts to really turn her on. Ally ventures away from  the track in to the wooded area it runs along side, where   she floods her diaper and touches herself until she cums!