Issaquah, WA Mobility & Curb Rules: Bike Lane Rules (2026)

Section 10.28.070 of the Issaquah Municipal Code is the city's bike lane obstruction rule. It names the striped bicycle lane, the shared-use corridor and the sidewalk alongside the traveled portions of the roadway, so a car stopped in a striped bike lane interferes with bicycle traffic under the plain text. The second sentence keeps parking legal outside those designated travel lanes, subject to other applicable regulation, which means the painted curb rules in 10.28.010 and the hydrant rule in 10.28.020 still apply beside a lane. The online code flags 10.28.070 as amended by Ordinance 3149 with a pending effective date of 11/18/2026.

Riding rules sit in Chapter 10.44 and Chapter 10.48. Under 10.44.025, any person riding a bicycle, including a passenger or a person in tow, upon any public area shall wear an approved bicycle helmet fastened with a neck or chin strap. A child is a person under 16, and the guardian is responsible for requiring the helmet; each child without one is a separate offense chargeable to the parent or guardian. Anyone regularly renting or loaning bicycles must have an approved helmet available, offer it and keep proof of the offer. A first-time cited rider who appears in person with proof of a helmet bought between the notice and the court date gets the infraction dismissed without costs under 10.44.025(H).

Under 10.48.030, no person may operate a Class 3 electric-assisted bicycle on any sidewalk, pedestrian path, shared use path or park trail, except that sidewalk operation is permitted when there is no safe alternative or the sidewalk is part of a bicycle path. Class 3 bikes are also barred from City-owned or controlled parks and other City property except parking lots. The Issaquah Police Department enforces Chapter 10.48 and can impound violating electric-assisted bicycles without notice under 10.48.040(A).