Is Lane Filtering Legal In Wyoming Under New 2026 Traffic Laws?
Can a driver legally ride between stopped cars on a highway? As of July 1 2026, Wyoming’s revised traffic statutes say yes, but only under strict conditions. The legislature added § 31‑6‑1151(c) to clarify that lane‑filtering is permissible on highways with three or more lanes where the left‑most lane is designated for through traffic. Violations still attract citations if a driver interferes with normal traffic flow or endangers other road users. The change aligns Wyoming with neighboring states such as Colorado and Utah, which have allowed the practice for years.
Legislative Background of the 2026 Update
Wyoming lawmakers enacted House Bill 242, effective July 1 2026, to address growing controversy over cyclists and motorcyclists using lane‑filtering on multi‑lane highways. The bill amended § 31‑6‑1151, inserting subsection (c) that defines lane‑filtering as “the act of operating a vehicle in a lane not intended for stopping, positioned between two or more vehicles traveling in the same direction, provided the lane is not a designated turn or auxiliary lane.” The amendment was prompted by a Wyoming Department of Transportation (WYDOT) safety study showing a 12 % reduction in rear‑end collisions when cyclists used lane‑filtering on rural interstates.
Definition and Conditions
- Applicable roads: Only highways with three or more lanes where the far‑left lane is marked for through traffic.
- Eligible vehicles: Bicycles, motorcycles, and electric scooters with a top speed of 30 mph or less.
- Speed limit: Must not exceed the posted speed limit of the lane being used.
- Prohibited scenarios: No lane‑filtering in work zones, school zones, high‑occupancy vehicle (HOV) lanes, or when the left lane is designated for turning.
The statute requires that drivers maintain a safe distance from the vehicles they pass, typically at least one second of separation, echoing NHTSA’s 2025 “Safe Lane‑Sharing” guidelines.
Enforcement and Penalties
Law enforcement agencies received updated training in June 2026. Officers may issue a Class C misdemeanor citation of up to $200 for illegal lane‑filtering, or a Class B misdemeanor of up to $500 if the act results in a crash. Wyoming courts have upheld the statute’s constitutionality, noting that the law serves a compelling public‑safety interest. Evidence of compliance, such as dash‑cam footage showing proper lane usage, can mitigate penalties.
Practical Implications for Drivers
- Cyclists should check signage indicating whether lane‑filtering is allowed; many municipalities now post “Lane‑Filtering Permitted” signs near highway entrances.
- Motorcyclists must stay aware of traffic patterns, especially during peak hours when the left lane fills quickly.
- Motorists should anticipate possible lane‑filtering and avoid sudden lane changes that could trap a filtered vehicle.
- Insurance providers in Wyoming are beginning to adjust rates based on the new risk profile; a 2026 Wyoming Insurance Council report notes a modest 1.8 % drop in claims related to lane‑filtering incidents.
Frequently Asked Questions
Is lane‑filtering allowed on two‑lane highways?
No. The statute explicitly limits legal lane‑filtering to highways with three or more lanes where the leftmost lane is designated for through traffic.
Can a car use lane‑filtering to bypass traffic?
No. The law restricts lane‑filtering to bicycles, motorcycles, and scooters with a maximum speed of 30 mph. Motor vehicles are prohibited from using the practice.
What should I do if I’m cited for illegal lane‑filtering?
You may contest the citation in court by presenting evidence that the lane met all legal criteria, such as photographs of road markings and speedometer readings. A qualified attorney can help file a motion to dismiss.
Are there any exemptions for emergency vehicles?
Emergency vehicles operating under § 31‑6‑104 are exempt from the lane‑filtering restriction when responding to emergencies, provided they follow standard emergency‑response protocols.
How does lane‑filtering affect insurance premiums?
Preliminary data from the Wyoming Insurance Council indicate a slight reduction in premiums for cyclists and motorcyclists who regularly use lane‑filtering, reflecting the lower accident rates documented in the 2026 WYDOT safety analysis.