THE PRIVATE PILOT ESCAPED INJURY WHEN HIS AIRPLANE COLLIDED WITH SNOW REMOVAL VEHICLES WHILE LANDING AT THE GIRDWOOD AIRPORT, GIRDWOOD, AK. THE PILOT REPORTED THAT HE FLEW OVER THE AIRSTRIP, IN HIS SKI-EQUIPPED AIRPLANE, SAW THE EQUIPMENT ON THE RUNWAY, AND RETURNED TO DO A TOUCH AND GO LANDING, HOPING THAT THE EQUIPMENT WOULD MOVE ONCE THEY SAW HIS AIRPLANE APPROACH THE FIELD. HE COMPLETED THE TOUCH AND GO, AND CAME AROUND FOR A FULL STOP LANDING. HIS LANDING ROLL TOOK LONGER THAN HE HAD ANTICIPATED, AND AS HE NEARED THE END OF THE RUNWAY, HE TURNED THE AIRPLANE TO SLOW IT DOWN AND TO HEAD FOR A CLEAR AREA AT THE END OF THE STRIP. IN THE PROCESS, HE TURNED TOWARDS THE MAINTENANCE VEHICLES, LOST DIRECTIONAL CONTROL, AND STRUCK BOTH VEHICLES, CAUSING SUPERFICIAL DAMAGE TO THEM AND SUBSTANTIAL DAMAGE TO THE AIRPLANE. THE MAINTENANCE VEHICLES WERE PARKED OUTSIDE THE RUNWAY PERIMETER MARKING CONES, AND THE FIELD HAD AN ACTIVE NOTICE TO AIRMEN REGARDING MEN AND EQUIPMENT ON THE RUNWAY.