Inversnecky
Member
I think it was when I was watching a Dad Rail video on YouTube that it was pointed out that when passing a 'whistle board', only the low tone should be given.
This naturally led me to wonder why trains had two tone horns? In which circumstances were two tones used? Was the hight tone ever used alone?
I know some modern trains sound both tones together and can't be separated as in the past.
I presume steam engines just had a single whistle, so the double tone horn is presumably an innovation that came with diesel? What was the rationale?
This naturally led me to wonder why trains had two tone horns? In which circumstances were two tones used? Was the hight tone ever used alone?
I know some modern trains sound both tones together and can't be separated as in the past.
I presume steam engines just had a single whistle, so the double tone horn is presumably an innovation that came with diesel? What was the rationale?