Rule 99 1 long and 3 short engine whistle or horn... Flagman protect the rear of train.
4 long.. flagman return from South and west (engine whistle or horn)
5 long flagman return from
North or east...(engine whistle or horn)
Other whistle combinations for double track ETC.
Caboose whistles sounded more like a cheap musical recorder. Not that loud but better than nothing.. Both ends had a whistle along with a emergency valve next to the hand brake.
Side bar.... I worked a job that serviced a ship yard, we found a great whistle from one of great lake boats and installed it on our Van.... Really loud but unfortunately it didn't last long,someone got word of it and made us take it off... Fun for a few days.
