AT-PASS(Access Train -Portable Access Signal alarm System) which is used at railroad sideway has an important effect upon geography. Especially, it is used at railroad which is a particular condition, tunnel, curve sections and electric car line sec...
AT-PASS(Access Train -Portable Access Signal alarm System) which is used at railroad sideway has an important effect upon geography. Especially, it is used at railroad which is a particular condition, tunnel, curve sections and electric car line sections.
Therefore, this paper investigated an affection though field test of railroad which is a particular condition.