Self-Driving Trucks Win Special Blinky Light Exemption from Feds
Published Date: 10/9/2026
Notice
Summary
The FMCSA just gave Aurora Operations, Inc. a 5-year green light to use special cab-mounted warning lights instead of the usual ones on their Level 4 self-driving trucks. This change affects Aurora and similar companies running automated commercial vehicles, starting October 7, 2026, and aims to keep safety just as strong or even better. No extra costs for carriers, just smarter, safer tech on the road!
Analyzed Economic Effects
5 provisions identified: 2 benefits, 2 costs, 1 mixed.
Five-year exemption lets Level 4 trucks use beacons
FMCSA granted a limited five-year exemption, effective October 7, 2026 through October 7, 2031, allowing Aurora and other motor carriers operating Level 4 automated driving system (ADS)-equipped commercial motor vehicles (CMVs) to use cab-mounted flashing warning beacons instead of placing the triangles or fusees required by 49 CFR 392.22(b) and 393.95(f). Other motor carriers may use the exemption only if they provide prior written notification to FMCSA and meet the exemption's terms.
Equipment must meet specific beacon standards
Beacons used under the exemption must be amber, meet the Class 1 photometric performance requirements of SAE J595, include forward- and rearward-facing flashing lights, be mounted at least 100 inches above the ground (at or above the top edge of sideview mirrors but below the top of the cab), and the vehicle width including mountings may not exceed 122 inches. The beacons must also have redundant power sources and flash at a pattern different from the vehicle's standard hazard flashers.
When and where beacons may be used
Operations using cab-mounted beacons are limited to CMVs equipped with a Level 4 ADS operating only within the vehicle's validated Operational Design Domain (ODD). The beacons must activate as soon as possible but in any event within five minutes whenever 49 CFR 392.22(b) would apply, and they must remain flashing for the entire duration of the stop.
Operations barred for passengers and hazardous materials
While operating under this exemption, motor carriers are prohibited from transporting passengers or hazardous materials that would otherwise require an 'H', 'X', 'P', or 'S' commercial driver's license endorsement if a human driver were present. The exemption also limits longer combination vehicle (LCV) operations to doubles with two 28-foot trailers and prohibits use for LCV triples; tankers are allowed subject to the exemption's terms.
Federal preemption for interstate operations under exemption
During the exemption period, no State may enforce a law or regulation applicable to interstate commerce that conflicts with or is inconsistent with this exemption for firms operating under it, per 49 U.S.C. 31315(d) and 49 CFR 381.600. States may, but are not required to, adopt the same exemption for intrastate operations.
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Key Dates
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