NAICS Code Lookup




Transportation and Warehousing


The Sector as a Whole

The Transportation and Warehousing sector includes industries providing transportation of passengers and cargo, warehousing and storage for goods, scenic and sightseeing transportation, and support activities related to modes of transportation. Establishments in these industries use transportation equipment or transportation related facilities as a productive asset. The type of equipment depends on the mode of transportation. The modes of transportation are air, rail, water, road, and pipeline.

The Transportation and Warehousing sector distinguishes three basic types of activities: subsectors for each mode of transportation, a subsector for warehousing and storage, and a subsector for establishments providing support activities for transportation. In addition, there are subsectors for establishments that provide passenger transportation for scenic and sightseeing purposes, postal services, and courier services.

A separate subsector for support activities is established in the sector because, first, support activities for transportation are inherently multimodal, such as freight transportation arrangement, or have multimodal aspects. Secondly, there are production process similarities among the support activity industries.

One of the support activities identified in the support activity subsector is the routine repair and maintenance of transportation equipment (e.g., aircraft at an airport, railroad rolling stock at a railroad terminal, or ships at a harbor or port facility). Such establishments do not perform complete overhauling or rebuilding of transportation equipment (i.e., periodic restoration of transportation equipment to original design specifications) or transportation equipment conversion (i.e., major modification to systems). An establishment that primarily performs factory (or shipyard) overhauls, rebuilding, or conversions of aircraft, railroad rolling stock, or a ship is classified in Subsector 336, Transportation Equipment Manufacturing according to the type of equipment.

Many of the establishments in this sector often operate on networks, with physical facilities, labor forces, and equipment spread over an extensive geographic area.

Warehousing establishments in this sector are distinguished from merchant wholesaling in that the warehouse establishments do not sell the goods.

Excluded from this sector are establishments primarily engaged in providing travel agent services that support transportation and other establishments, such as hotels, businesses, and government agencies. These establishments are classified in Sector 56, Administrative and Support and Waste Management and Remediation Services. Also, establishments primarily engaged in providing rental and leasing of transportation equipment without operator are classified in Subsector 532, Rental and Leasing Services.

NAICS CodesNAICS Description
4811Scheduled Air Transportation
4812Nonscheduled Air Transportation
4821Rail Transportation
4831Deep Sea, Coastal, and Great Lakes Water Transportation
4832Inland Water Transportation
4841General Freight Trucking
4842Specialized Freight Trucking
4851Urban Transit Systems
4852Interurban and Rural Bus Transportation
4853Taxi and Limousine Service
4854School and Employee Bus Transportation
4855Charter Bus Industry
4859Other Transit and Ground Passenger Transportation
4861Pipeline Transportation of Crude Oil
4862Pipeline Transportation of Natural Gas
4869Other Pipeline Transportation
4871Scenic and Sightseeing Transportation, Land
4872Scenic and Sightseeing Transportation, Water
4879Scenic and Sightseeing Transportation, Other
4881Support Activities for Air Transportation
4882Support Activities for Rail Transportation
4883Support Activities for Water Transportation
4884Support Activities for Road Transportation
4885Freight Transportation Arrangement
4889Other Support Activities for Transportation
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