King County and Washington state limit unnecessary diesel idling, particularly near schools, hospitals, and Metro bus bases, to protect air quality in the central Puget Sound airshed.
Washington Administrative Code 173-422A and county fleet policies cap diesel truck and bus idling at five minutes in most situations, with longer allowances only for safety, defrosting, or active loading. King County Metro and Public Health Seattle & King County run anti-idling programs at school zones and transit centers. The Puget Sound Clean Air Agency enforces regional idling rules and investigates complaints about idling commercial vehicles.
Violations of WAC 173-422A diesel idling rules can result in Puget Sound Clean Air Agency civil penalties, with notices first and escalating fines for repeat or commercial offenders.
Redmond, WA
Redmond does not ban gas leaf blowers, but restricts their use to daytime hours under RMC 6.32. Residential yard equipment is permitted between 7 AM and 10 P...
Redmond, WA
Industrial-source noise received in Redmond residential areas may not exceed 60 dBA daytime and 50 dBA nighttime under RMC 6.32 and WAC 173-60. Overlake and ...
Redmond, WA
Redmond generally allows overnight residential street parking within the 72-hour continuous-parking limit. Downtown time zones, snow events, and posted no-pa...
Redmond, WA
Redmond restricts on-street RV and boat parking to 72 hours and regulates driveway storage under RMC Title 21. Many zones limit the number of recreational ve...
Redmond, WA
Redmond regulates driveway width, surfacing, and apron construction under RMC Title 21 and Public Works standards. Residential driveways are typically 10-24 ...
Redmond, WA
Standard residential fences up to 6 feet in side and rear yards and 4 feet in front yards do not require a building permit in Redmond. Permits are needed for...
Side-by-side rule comparisons with other cities in King County.
See how Redmond's vehicle idling restrictions rules stack up against other locations.
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