Skyline Boulevard (SR-35) Peninsula Ridge
At a glance: Graded 51 out of 100 (Tier 2: Multi-Lane Urban Arterial) across 12.4 miles in San Francisco Peninsula. Forested two-lane ridge highway with rolling elevation, redwood shade-to-sunlight contrast, and cross-ridge recreational turnouts.
Why this corridor sits in Tier 2
Following the spine of the Santa Cruz Mountains between SR-92 and Woodside’s SR-84 junction, Skyline Boulevard alternates between open watershed vistas and dense second-growth redwood canopy. Dappled light contrast, trailhead left turns, and weekend motorcycle and cycling groups define its historical collision profile.
Key roadway traits
- Redwood canopy light-dark transitions
- Weekend motorcycle & cyclist crossings
- Rolling 4.5% grades
Four-factor geometric & crash decomposition
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Connected highway & local crash profiles
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Other Tier 2 California corridors
Methodology & interpretation limits
Complexity Index combines horizontal curvature, sustained elevation grade, speed-transition demand, and 12-month historical reported crash concentration per corridor mile. Counts describe observational public records unadjusted for daily traffic volume and do not represent driving safety advice. Missing-coordinate collision records in surrounding cities are reported separately in live buffered queries and are never plotted at synthetic coordinates.
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