The N Kato 20-605 Unitrack Automatic 3 Color Signal Straight Track is a model train track accessory designed for N scale model railroads. Made by the renowned brand KATO, this straight track features an automatic signal that changes color to indicate whether it's safe to proceed. With a length of 124mm (4 7/8"), this track is perfect for enhancing the realism and functionality of your miniature train layout.