21
KSI Total
2015–2025 excl. 2020
1
Fatalities
People killed
83
Visible Injuries
City streets
210
Total Collisions
City streets only
10.0%
KSI Rate
21 / 210
12.5%
Alcohol KSI Rate
vs 9.7% non-alcohol
Annual collision trend by severity
2015–2025 excl. 2020 — gap marks excluded year
Severity breakdown
All city street collisions
Collision type distribution
Count by type
Primary collision factor
Top contributing factors
Collisions by hour of day
Red=late night · Yellow=PM peak
Day of week
Volume by weekday
What vehicle hit
Motor vehicle involved with
High Injury Network Explorer
Sorted by KSI · All years 2015–2025 excl. 2020 · City streets only
Era Comparison
2015–2019 (pre-COVID) vs 2021–2025 (post-COVID) Equal 5-year windows · 2020 excluded · All metrics normalizedKSI rate per year — trend
Blue=2015–19 · Orange=2021–25
Volume per year
Crash count trend by era
Collision type — KSI rate shift
Blue=era A · Orange=era B · Higher = more deadly per crash
Primary factor — volume/year
Is the mix of causes changing?
HIN Corridor Changes: 2015–19 vs 2021–25
The Safety Story: 2015–2019 vs 2021–2025
Equal 5-year periods · 2020 excluded · Stats normalized for fair comparisonKSI Rate: Broadly Stable
-1.9%
KSI rate: 10.1% → 9.91%. Relatively stable but not improving. Targeted investment needed to drive the rate meaningfully down.
ROW Violations: Dominant Cause
%
Automobile Right-of-Way is the #1 PCF in El Cerrito — distinct from most Contra Costa cities. Protected LT phases, LPI, and all-way stops at uncontrolled locations are the targeted solutions.
POTRERO AV: Persistent Hotspot
1 → 1 KSI
POTRERO AV is the #1 HIN corridor with 2 total KSI (0 fatal). Remains city's highest-risk corridor.
HIN: Concentrated Risk
5 new corridors
5 new corridors emerged in 2021–25 not present in 2015–19. 1 corridor persist across both eras. Concentrated risk — targeted corridor investment is efficient.
Alcohol: Real Progress
20.0% → 7.1%
Alcohol KSI rate fell from 20.0% to 7.1%. Genuine progress — but at 7.1%, alcohol crashes remain 1.3× more deadly than non-alcohol. DUI enforcement must continue.
Motorcycle Fatality Risk
33.3% → 20.0%
Motorcycle KSI rate: 33.3% → 20.0%. 8 crashes, 2 KSI. Late-night weekend concentration amplifies severity — enforcement targeting these windows is essential.
Dark KSI Improving
17.4% → 9.5%
Dark-condition KSI rate improved: 17.4% → 9.5%. 44 dark crashes, 6 KSI. Lighting improvements are working — maintain investment.
Volume vs Severity
20/yr → 22/yr
Crash volume: 20/yr (era A) → 22/yr (era B). Both volume and severity trends require sustained investment.
Top Intersection: CENTRAL AV & OHLONE GREENWAY
0 KSI
CENTRAL AV & OHLONE GREENWAY — 0 KSI (0 fatal), 6 crashes. Era A: 0 KSI → Era B: 0 KSI. Targeted intersection capital recommended.
AI-Powered Safety Insights
Multivariate patterns · El Cerrito city streets 2015–2025 (excl. 2020) · Ranked by policy impact
Alcohol Multiplier Effect
1.3×
Alcohol KSI rate: 12.5% vs 9.7% non-alcohol. 11.4% of crashes, 14.3% of KSI.
DUI EnforcementDarkness Amplifies Severity
38.8%
Of pedestrian crashes occur in dark. After-dark ped crashes are 2.0× more likely to be fatal/severe than daytime (21.1% vs 10.7% KSI rate).
Street LightingPedestrian KSI Rate Elevated
16.3%
Pedestrian KSI rate: 16.3% across 49 crashes (8 KSI). 38.8% of ped crashes in dark — LED lighting and RRFB crossings are the priority response.
Ped InfrastructureLate Night KSI Spike
16.7%
KSI rate 0–5 AM is 1.6× higher than midday (10.6%). 0.0% of crashes, concentrated fatal risk window.
High-Severity WindowAlcohol + Dark: Compound Risk
23.1%
Alcohol AND dark: KSI rate hits 23.1% — well above city average of 10.0%. Disproportionate harm from this combination.
Compound RiskMotorcycle Danger Window
25.0%
Motorcycle KSI rate: 25.0% — 2.5× city average. 8 crashes, 2 KSI. Late-night weekend is highest-risk window.
Motorcycle SafetyCollision type × severity heatmap
Darker = higher KSI rate
KSI rate by time of day
When is each crash most likely to be fatal or severe?
Annual KSI vs total collisions
Volume declining but severity rising — the key trend
Top 5 corridors — KSI persistence
Dangerous year after year
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Showing
—
KSI
—
Fatal
—
KSI Rate
Severity
Fatal
Severe
Visible
Pain
SS4A FY2026 Implementation Grant — Project Portfolio
Three plans based on 2021–2025 post-COVID crash data · May 26, 2026 deadline
HSIP Cycle 13 — Project Recommendations
Cross-cycle C8–C12 analysis · El Cerrito award history · 2021–2025 crash data
$5M–$18M est. portfolio
HSIP Grant Intelligence Module
Synthesized from Cross-Cycle Analysis C8–C12 · Countermeasure Trends · C12 Report & Funded Projects List
$0.54M
El Cerrito HSIP Won
C12
1
Projects Funded
Prior award cycles
$1.15B
Program Total
1,281 projects C8–C12
$5–18M
C13 Portfolio Target
6 recommendations
El Cerrito HSIP Application History
C13 Statewide Intelligence
🚀 Rising Countermeasures (C8→C12)
Gaining frequency & funding — prioritize for C13
LPI: 0→33 projects · +33
RRFB/Beacons: 11→57 · +46
Retroreflective Backplates: 1→23 · +22
Class IV Bike Lanes: 14→31 · +17
Raised Medians: 8→19 · +11
📉 Declining Countermeasures
Losing funding share — supplement but don't lead with these
Signal Timing Only: 45→12 · -33
Striping/Delineation Only: 28→9 · -19
Guardrail: 22→8 · -14
Rumble Strips Only: 11→4 · -7
BCR Sweet Spot
$1.5M–$4M
El Cerrito should target $1.5–3.5M per BCR application. Stack 3+ countermeasures for highest BCR score.
Best Win Strategy
3-CM Stack
C12 winners averaged 3+ countermeasures per application. Prior C12 wins provide competitive positioning.
VRU Pool
95 VRU
49 ped + 46 bike = 15 KSI. Qualifies for VRU Special Rule set-aside.