Abstract
As a novel psychological countermeasure to reduce traffic accidents in expressway, our previous study proposed an expressway driving game based on Gamenics theory, which encourages drivers to keep the speed limit spontaneously. Gamenics theory is one of the interface design methods to attract user's interests. The present manuscript discusses about the effectiveness of the game on driver behavior, based on results of actual vehicle experiments. The results revealed that many experimental participants felt fun for the game, and the game could provoke spontaneous behavioral change of keeping the speed limit.
