Hi folks,
I just completed my second run-through of the first tutorial, and the one thing I seem to be having problems with (other than being late) is knowing when to sound the horn. I do it whenever I see a crossing in the distance, but I got two "failed to sound horn" indications in my last playthrough. I'm thinking there must be some signal that I'm missing. Is there a sign or symbol that tells me when to sound the horn (if so, what does it look like?), or do I just have to pay more attention to the railroad crossings?