|  | March 2010 Traffic Volume TrendsRegions Map
March 2010 Traffic Volume Trends - Regions Map
| West
 AlaskaArizonaCaliforniaColoradoHawaiiIdahoMontanaNevadaNew MexicoOregonUtahWashingtonWyoming | North Central
 IllinoisIndianaIowaKansasMichiganMinnesotaMissouriNebraskaNorth DakotaOhioSouth DakotaWisconsin | Northeast
 ConnecticutMaineMassachusettsNew HampshireNew JerseyNew YorkPennsylvaniaRhode IslandVermont |  
| South Gulf
 AlabamaArkansasKentuckyLouisianaMississippiOklahomaTennesseeTexas | South Atlantic
 DelawareDistrict Of ColumbiaFloridaGeorgiaMarylandNorth CarolinaSouth CarolinaVirginiaWest Virginia |  |  |  |