BRIO 33699 Curved Bridge SetUpgrade your train tracks with this curved bridge from Brio. Explore all the new layouts you can build going over and under the bridge! Smart Tech is the new Train technology from BRIO! Simply press go on the engine and set up the Smart Tech arches around the track. The Engine will automatically detect each arch and do exactly what is shown. It could stop,start, go slow, turn on the lights or make a sound. Isn't that fun. Where will the train go next?