Seattle’s Priority Rating System
Score Correctable Accidents/Year .5-.875 1 (average over 3 years) .876-1.2501 2 1.251-1.625 3 1.626-2.000 4 2..001-2.375 5 2..376-2..750 6 if “non-correctable” exceed an average of 2 per year ˝ if midblock accidents exceed an average of 2 per year ˝
Average Daily Volume (vpd) 500-1100 ˝ 1101-1700 1 1701-2300 1 ˝ 2301-2700 2
85th Percentile Speed (mph) 26-29 ˝ 29.1-32 1 32.1-35 1 ˝ 35.1-38 2 38.1-41 2 ˝ 41.1-44 3