My train obsession is making the fact that the train has an American horn really bother me. Trains in Japan have at least one of the following:
Electric horn (most common on electric multiple unit trains, for regular service usage)
AW-2 Air Whistle (Standard on many diesel and electric locomotives, as well as older multiple unit trains, although modern multiple unit trains have one alongside the electric horn in case the electric horn isn’t heeded)
Single-chime air horn (Common on diesel railcars, although other trains may have them too)
Multiple single-chime horns in combination (Older trains might have these, although they can be found in modern trains as well)