public class Transport extends Thread
{
   private TransportMode transportMode;
   private int id;
   private Bridge bridge;

   public Transport(TransportMode atMode, int tId, Bridge bridgeId)
   {
      transportMode = atMode;
      id = tId;
      bridge = bridgeId;
   }

   public void run()
   {
      bridge.enterBridge(transportMode);
      bridge.useBridge(transportMode, id);
      bridge.exitBridge(transportMode);
   }
}