488999 — All Other Support Activities for Transportation
Description
This U.S. industry comprises establishments primarily engaged in providing support activities to transportation (except for air transportation; rail transportation; water transportation; road transportation; freight transportation arrangement; and packing and crating) (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Illustrative Examples
- Arrangement of vanpools or car pools (except ridesharing arrangement services)
- Independent pipeline terminal facilities
- Stockyards (i.e., not for fattening or selling livestock)
Exclusions & Cross-References
- Operating stockyards for fattening livestock--are classified in Subsector 112, Animal Production and
- Aquaculture;
- Providing tariff and freight rate consulting services--are classified in U.S. Industry 541614, Process,
- Physical Distribution, and Logistics Consulting Services;
- Providing packing and crating services for transportation (except warehousing)--are classified in U.S.
- Industry 488991, Packing and Crating;
- Providing warehousing services--are classified in Industry Group 4931, Warehousing and Storage;
- Operating car pools and vanpools--are classified in U.S. Industry 485999, All Other Transit and Ground
- Passenger Transportation;
- Providing pipeline transportation and storage of natural gas--are classified in Industry 486210, Pipeline
- Transportation of Natural Gas;
- Providing support activities for air transportation--are classified in Industry Group 4881, Support Activities
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 4729 - Arrangement of Passenger Transportation, NEC (via SIC1987:4729→NAICS1997:488999→2002:488999→2007:488999→2012:488999→2017:488999→2022:488999)
- SIC 4789 - Transportation Services, NEC (via SIC1987:4789→NAICS1997:488999→2002:488999→2007:488999→2012:488999→2017:488999→2022:488999)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC V119 — Other Cargo and Freight Services
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 488999 valid in 2022? ▾
Yes, 488999 is a valid 6-digit 2022 NAICS national industry code representing 'All Other Support Activities for Transportation' under Sector 48-49 in the official classification index.
What is the SBA size standard for NAICS code 488999? ▾
The Small Business Administration (SBA) has established a small business size standard of $25,000,000 for NAICS code 488999 (All Other Support Activities for Transportation), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 488999? ▾
According to official Census Bureau concordance tables, NAICS code 488999 (All Other Support Activities for Transportation) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 4729 - Arrangement of Passenger Transportation, NEC, 4789 - Transportation Services, NEC.
Related Pages & Tools
Further regulatory reference links for NAICS code 488999:
- Sector 48-49 Directory Hub — List of related industries in the Transportation and Warehousing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 488999 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (All Other Support Activities for Transportation).
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.