NAICS 4851 is the North American Industry Classification System code for Urban Transit Systems, a industry group in the Transit and Ground Passenger Transportation subsector (485) of the Transportation and Warehousing sector (48-49). It divides into 4 more specific codes, including Mixed Mode Transit Systems (485111), Commuter Rail Systems (485112) and Bus and Other Motor Vehicle Transit Systems (485113).
NAICS 4851 is the code for Urban Transit Systems, a industry group in the North American Industry Classification System (NAICS 2022), under 485 (Transit and Ground Passenger Transportation). It has 4 more specific codes: 485111, 485112, 485113 and 485119.
The parent of NAICS 4851 is 485, Transit and Ground Passenger Transportation. Every company under 4851 is also counted under 485.