488490 — Other Support Activities for Road Transportation
Description
This industry comprises establishments primarily engaged in providing services (except motor vehicle towing) to road network users.
Illustrative Examples
- Bridge, tunnel, and highway operations
- Pilot car services (i.e., wide load warning services)
- Truck or weighing station operations
- Driving services, independent (e.g., automobile, truck delivery)
Exclusions & Cross-References
- Providing automotive repair and maintenance--are classified in Industry Group 8111, Automotive Repair
- and Maintenance;
- Providing towing services to motor vehicles--are classified in Industry 488410, Motor Vehicle Towing;
- Providing a network for busing in combination with providing terminal services--are classified in Industry
- 485210, Interurban and Rural Bus Transportation;
- Providing a network for trucking in combination with providing terminal services--are classified in
- Subsector 484, Truck Transportation; and
- Providing transportation services as owner-operators--are classified in Sector 48-49, Transportation and
- Warehousing, according to primary activity.
- TRANSPORTATION AND WAREHOUSING 395
Overview Facts
| NAICS Code | 488490 |
|---|---|
| Industry Title | Other Support Activities for Road Transportation |
| SBA Size Standard | $18,000,000 |
| IRS PBA Code | 488490 (exact match) |
| Sectors Hierarchy | Sector 48-49 → 488 → 4884 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 4173 - Terminal and Service Facilities for Motor Vehicle Passenger Transportation (via SIC1987:4173→NAICS1997:48849→2002:488490→2007:488490→2012:488490→2017:488490→2022:488490)
- SIC 4231 - Terminal and Joint Terminal Maintenance Facilities for Motor Freight Transportation (via SIC1987:4231→NAICS1997:48849→2002:488490→2007:488490→2012:488490→2017:488490→2022:488490)
- SIC 4785 - Fixed Facilities and Inspection and Weighing Services for Motor Vehicle Transportation (via SIC1987:4785→NAICS1997:48849→2002:488490→2007:488490→2012:488490→2017:488490→2022:488490)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 488490:
- 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.
- 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.
Related Industries in 4884
Frequently Asked Questions (FAQ)
Is 488490 a valid 2022 NAICS code?
NAICS 488490 is 'Other Support Activities for Road Transportation', a 2022 U.S. national industry under Sector 48-49 (Transportation and Warehousing); the SBA small-business size standard is $18,000,000.
What is the SBA size standard for NAICS 488490?
The SBA small business size standard for NAICS 488490 is $18,000,000 (based on receipts).
What is the legacy SIC code mapping for 488490?
NAICS code 488490 maps to the legacy 1987 SIC codes: 4173 - Terminal and Service Facilities for Motor Vehicle Passenger Transportation, 4231 - Terminal and Joint Terminal Maintenance Facilities for Motor Freight Transportation, 4785 - Fixed Facilities and Inspection and Weighing Services for Motor Vehicle Transportation.