Plan City Road Construction Set is a great addition to Plan City Road and Rail System. The vehicles can help children learn the different functions used by each vehicle, which create the real life experience to them. Unlimited imagination can be created through the play. The set comes with a bulldozer, steam roller and excavator. It is great construction vehicles for little hands. 3 years & up. Three wooden transportation vehicles that teach children their functions through play. This encourages imagination while they build their own city. Includes a bulldozer, roller and an excavator.