Sight triangles
Seattle Mun. Code § 23.54.032
in effectA. For exit-only driveways and easements, and two-way driveways and easements less than 22 feet wide, a sight triangle on both sides of the driveway or easement shall be provided, and shall be kept clear of any obstruction for a distance of 10 feet from the intersection of the driveway or easement with a driveway, easement, sidewalk, or curb intersection if there is no sidewalk, as depicted in Exhibit A for 23.54.032 . Exhibit A for 23.54.032 Sight triangle B. For two-way driveways or easements 22 feet wide or more, a sight triangle on the side of the driveway used as an exit shall be provided, and shall be kept clear of any obstruction for a distance of 10 feet from the intersection of the driveway or easement with a driveway, easement, sidewalk, or curb intersection if there is no sidewalk. The entrance and exit lanes shall be clearly identified. C. The sight triangle shall also be kept clear of obstructions in the vertical spaces between 32 inches and 82 inches from the ground. D. When the driveway or easement is less than 10 feet from the lot line, the sight triangle may be provided as follows: 1. An easement may be provided sufficient to maintain the sight triangle. The easement shall be recorded with the King County Recorder's Office; or 2. The driveway may be shared with a driveway on the neighboring lot; or 3. The driveway or easement may begin 5 feet from the lot line, as depicted in Exhibit B for 23.54.032 . Exhibit B for 23.54.032 Sight triangle exception E. An exception to the sight triangle requirement may be made for driveways serving lots containing only residential uses and fewer than three parking spaces, when providing the sight triangle would be impractical. F. In all downtown, industrial, Commercial 1, and Commercial 2 zones, the sight triangle at a garage exit may be provided by mirrors and/or other approved safety measures. G. Sight triangles are not required for one-way entrances into a parking garage or surface parking area. H. Sight triangles are not required when access to parking is provided from an alley. (Ord. 127376 , § 63, 2026 [renumbered from 23.54.030.G and amended]; Ord. 125272 , § 49, 2017; Ord. 124378 , § 59, 2013; Ord. 123649, § 39, 2011; Ord. 123495, § 67, 2011 [department name change/relettered an exhibit]; Ord. 123209, § 56, 2009; Ord. 115326, § 28, 1990 [renumbered from 23.54.030.F and amended]; Ord. 113279, § 30, 1987; Ord. 112777, § 32, 1986.)
Source: Seattle Municipal Code (Municode library)URL: https://library.municode.com/wa/seattle/codes/municipal_codeFetched: 7/25/2026