The combination options of the Kullerbu play system are as colorful and varied as the play system itself: the Kullerbu tracks can be flexibly combined. This encourages the imagination and creativity of little Kullerbu builders aged between 2 and 8 years, and ensures even more variety when playing. If the track needs to grow upwards or in length then you generally need additional "construction material" in the form of pillars, straight sections, curves and connecting elements. All this is included in the practical Kullerbu expansion sets. This is an expansion set for our Kullerbu tracks. This allows for a 4-way intersection and railroad crossing. Includes: 1 intersection, 1 traffic light, 2 railroad crossing signs, 2 straight tracks, 1 wavy curve, 1 curve, and 4 base connectors.