(istock/Iryna Inshyna)
Motorcycle riders have long debated the benefits of sliding between cars at red lights. Known as lane filtering, this practice has recently gained traction in the U.S., with more states joining California in legalizing it. Now here’s the interesting part — studies suggest it may actually reduce accidents. Still, not everyone is convinced.
What Exactly Is Lane Filtering?
Lane filtering happens when motorcyclists slowly move between stopped or slow-moving vehicles, usually at traffic lights or in heavy congestion. It’s not the same as lane splitting, where riders zip between moving cars on highways. Filtering is meant to be slower, more controlled, and often restricted to lower speeds.
In my experience, anyone who’s ridden in midsummer heat knows the temptation — being able to ease through traffic instead of roasting behind a tailpipe feels like freedom.
Motorcycle Lane Filtering Is Now Legal Here – Is Your State on the List?
As of 2025, several U.S. states have made lane filtering legal under specific rules. Here’s a quick rundown:
- California — Lane splitting is explicitly recognized and permitted statewide. Riders are expected to do it safely and responsibly.
- Utah — Legal since 2019, but only when traffic is stopped, and the rider must stay under 15 mph.
- Montana — Became the third state in 2021 to allow lane filtering at speeds under 20 mph.
- Arizona — Legalized in 2022, but riders can only filter between stopped cars on roads with at least two lanes in the same direction.
- Colorado & Minnesota — Both passed laws in 2024 allowing controlled lane filtering, with speed restrictions and clear safety requirements.
That’s six states so far, and momentum is building. Lawmakers in other regions are already exploring similar bills.
The Surprising Safety Benefits of Lane Filtering
(istock/anouchka)
One of the biggest arguments in favor of lane filtering is safety. According to rider advocacy groups and multiple studies, riders who filter are less likely to be rear-ended at stoplights.
Think about it: a car slamming into another car usually results in crumpled fenders. But if that same car hits a motorcycle stopped at the light, the rider’s life is on the line. Filtering helps remove bikes from that “rear-end danger zone.”
On the flip side, filtering also helps reduce traffic congestion, even if only slightly. One rider easing between cars frees up space in the lane — it adds up in rush hour.
Persistent Arguments Against Lane Filtering
Of course, not everyone is thrilled about the change. Opponents often raise three main points:
- Driver Confusion — Many car drivers aren’t used to seeing motorcycles filter, leading to sudden swerves or attempts to block them.
- Risk of Sideswipe Accidents — If a driver suddenly opens a door or drifts within their lane, a filtering rider could be in trouble.
- Enforcement Challenges — Laws vary by state, and vague wording can make it hard for riders and police alike to know the limits.
That said, most of these concerns trace back to education. In states where filtering has been legal for years, both drivers and riders tend to adapt.
Arizona’s Early Results
(istock/MD Shahjehan)
Arizona legalized lane filtering in 2022. According to early reports from local law enforcement, there hasn’t been a spike in crashes tied to filtering. In fact, most officers admit that riders seem cautious, using it primarily in traffic jams or at long red lights.
This makes it surprisingly practical for urban riders in places like Phoenix, where summer traffic and heat can be brutal.
Tips for Riders Considering Lane Filtering
If you’re lucky enough to ride in a state where lane filtering is legal, here are a few practical tips:
- Keep your speed under the legal threshold (usually 10–20 mph).
- Only filter when traffic is stopped or crawling.
- Always scan for sudden lane changes or car doors.
- Avoid filtering next to large trucks or buses with limited visibility.
Remember: just because it’s legal doesn’t mean it’s always the safe choice.
Lane filtering is slowly gaining ground in the U.S., and the data so far looks promising. While opponents worry about confusion and safety, early results show that when done responsibly, it may actually protect riders. Whether your state is on the list yet or not, the conversation isn’t slowing down anytime soon.
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FAQs
1. Motorcycle Lane Filtering Is Now Legal Here – Is Your State on the List?
Currently, California, Utah, Montana, Arizona, Colorado, and Minnesota have legalized some form of lane filtering.
2. What’s the difference between lane filtering and lane splitting?
Filtering is done at low speeds between stopped or slow cars, while lane splitting can involve moving traffic at higher speeds.
3. The surprising safety benefits of lane filtering — are they real?
Yes. Studies and rider groups report fewer rear-end collisions in areas where filtering is legal.
4. Why are there persistent arguments against lane filtering?
Concerns include driver confusion, potential sideswipe risks, and difficulty enforcing speed limits for filtering.
5. Is lane filtering legal everywhere in the U.S.?
No. It’s still banned in most states. Always check your local DMV or DOT website before trying it.
