As of Sept. 24, a new motorcycle lane filtering law is in effect. Passed during the most recent legislative session, the new law applies statewide and allows motorcycles to split the lanes to ride between and move ahead of other stopped vehicles when certain criteria are met.
To legally lane filter, motorcyclist must be able to safely pass stopped motor vehicles traveling the same direction and:
1. Be riding on a roadway with two or more adjacent travel lanes going in the same direction
2. Make sure the posted speed limit on the road is 45 mph or less
3. Drive no faster than 15 mph, while riding between stopped vehicles
For more information, refer to azleg.gov regarding Arizona Revised Statute 28-903.F.