Subway signal light / Signal light

The 'Subway signal light' help passengers using subway in getting on/off the subway more safely by showing individually different signs for each part divided in the simple form. The arrows on both sides let passenger know that the door will be opened and help them in getting on/off the subway in the more orderly manner. And, the gauge which is started on both sides of arrow and collected to the center, embodies the direction that the door is closed from both sides and helps them in estimating the time the door will be closed. Therefore, it prevents passengers from jumping into the subway by force.