A SAAB 340 PLT LNDG AT CTAF PADU RPTS OVERFLYING AND LNDG BEYOND AN ARPT MAINT VEHICLE THAT DID NOT EXIT THE RWY FOLLOWING SEVERAL CALLS.

Narrative

THE LACK OF ATTN OF THE GND VEHICLE DRIVER TO HIS POS ON THE RWY (HOW FAR HE HAD TO GO TO BE CLR) AND TO HOW FAR OUT THE ACFT WAS ON APCH. LNDG PADU; WE WERE TALKING ON CTAF GIVING POS RPTS AS NEEDED. GIVING A BASE LEG RPT; THE DOT SWEEPER DRIVER RESPONDED THAT HE WOULD BE CLR OF THE RWY. ARPT 'MOBILE ONE' ALSO STATED 'LIGHTS ARE ON; DECK IS CLR.' VISIBILITY THEN DROPPED DUE TO A SNOW SQUALL. UPON TURNING FINAL I NOTICED A VEHICLE ON THE RWY. 2 COMPANY ACFT WERE WAITING TO CROSS THE RWY. THEY HEARD OUR POS CALLOUTS AND HELD ON THE N SIDE OF THE RWY WAITING FOR US TO LAND. 1 ACFT SEEING US ON FINAL AND THE VEHICLE ON THE RWY CAUTIONED ME AND STARTED YELLING AT THE DRIVER. A GAR WAS NOT POSSIBLE DUE TO THE VERY LOW VISIBILITY OFF THE DEP END OF THE RWY. I DECIDED THE SAFEST THING TO DO WAS TO LAND BEYOND THE VEHICLE. I SIDE-STEPPED SLIGHTLY TO THE R AND OVERFLEW THE VEHICLE AND SAFELY LANDED. PLT WITNESSES RPTED THAT WHEN I TOUCHED DOWN THAT THE VEHICLE WAS CLR. IT IS NOT EVERY DAY THAT I OVERFLY A VEHICLE ON THE GND WHEN LNDG. IN FACT IT IS THE FIRST TIME. HAVE THE DOT DRIVERS BETTER UNDERSTAND WHERE THEY AND ACFT ARE IN RELATION TO EACH OTHER. THE CREW SHOULD ALSO ENSURE THAT THEY ARE CLR. IN THIS CASE BECAUSE THE VISIBILITY WENT DOWN I OPTED TO LAND AS THE SAFEST MEASURE.