Traffic Impact Analysis

Impact of Closing Tamiscal and Relocating to San Andreas

Consolidating all Alternative Education (Alt Ed) students at the San Andreas campus shifts school traffic from Doherty Drive (Tamiscal) into the smaller residential/collector street grid centered on Lucky Drive & William Avenue.

Why Closing Tamiscal Matters

Today, traffic is split between:

  • Tamiscal Campus (Doherty Dr)
  • San Andreas Campus (Lucky Dr)

Consolidation concentrates all Alt Ed traffic into William Ave / Lucky Dr, increasing congestion and neighborhood impacts.

Study Area Map

Interactive aerial map of San Andreas / Lucky Drive / William Avenue.

Use scroll or pinch to zoom. Shows campus access points and surrounding residential network.

Peak Traffic Surge at Lucky & William

Trip Generation Snapshot

  • 250 students
  • 60% arrive by car → ≈150 traveling by vehicle
  • 1.2 students per car → ≈125–150 vehicles per peak
  • +25–35 staff/visitors

Arrivals occur in a tight 20–30 minute window, generating 300–450 vehicles/hr through the William Ave / Lucky Dr network.

Today (Split Sites)
150–200
After Consolidation
300–450
Key takeaway: Consolidation doubles or triples peak vehicle volume through the William Ave neighborhood.