Safety case & program alignment
+49.1% KSI rate post-COVID — Antioch's severity crisis requires urgent intervention
Antioch’s KSI rate shifted from 11.85% (2015–19) to 17.67% (2021–25) — a +49.1% increase. Volume fell but each crash is significantly more likely to kill or severely injure — a severity crisis, not a volume crisis. 149 post-COVID KSI across 98 HIN corridors demand immediate targeted investment.
CCTSAP 2024 countywide action plan — Antioch-specific appendix available for adoption
CCTA adopted the Countywide Comprehensive Transportation Safety Action Plan (CCTSAP 2024) — a USDOT-eligible action plan covering all Contra Costa cities including Antioch. The CCTSAP includes a city-specific appendix for Antioch. Upon local adoption resolution and completion of the USDOT Self-Certification Worksheet, Antioch can apply for a FY2026 SS4A Implementation Grant targeting $5–12M federal.
66
Fatalities
city streets
98
HIN corridors
identified
CCTSAP 2024
Countywide
action plan
Project breakdown by category (2021–2025 crash data)
| Category | Projects | Cost Est. | Focus locations |
|---|
| HIN Intersections |
4 |
$2.2M |
LONE TREE WAY & BLACK DIA, 10TH ST & F ST — ranked by 2021–25 KSI |
| Corridor Programs |
3 |
$5.8M |
LONE TREE WAY, DEER VALLEY RD, LONE TREE WY — LPI + lighting + raised median |
| Citywide Programs |
3 |
$1.6M |
LPI+APS rollout, LED intersection lighting, speed feedback |
⚡ Two-step path: Adopt CCTSAP appendix + complete Self-Certification Worksheet
Step 1: City Council adopts Antioch-specific CCTSAP appendix (available from CCTA). Step 2: Complete USDOT Self-Certification Worksheet confirming CCTSAP satisfies all required action plan components. If confirmed → submit FY2026 Implementation Grant by May 26, 2026. Contact CCTA for the Antioch appendix and eligibility guidance. Recommend pre-application USDOT review (due April 24, 2026).
Priority SS4A projects — 2021–2025 crash data
Tier 1 — Fatal & high-KSI corridors (2021–2025)
| Location | KSI | Fatal | Countermeasures |
LONE TREE WAY COR #1
122 crashes · 19 KSI · 6 fatal · ⚠️ Emerging: era B 19 KSI |
19 |
6 |
HAWK beacon, Raised median, LPI+APS all signals, LED lighting, HV crosswalks, Ped countdown signals |
DEER VALLEY RD COR #2
97 crashes · 15 KSI · 2 fatal · 📈 Worsening: era B 9 KSI |
15 |
2 |
Protected LT, LPI+APS, LED lighting, Ped refuge islands, RRFBs, Speed calming |
LONE TREE WY COR #3
165 crashes · 15 KSI · 3 fatal · 🔁 Persistent: era B 0 KSI |
15 |
3 |
HAWK beacon, Class IV bike lanes, RRFB crossings, Ped refuge islands, LED lighting, LPI at signals |
HILLCREST AV COR #4
112 crashes · 14 KSI · 4 fatal · 🔁 Persistent: era B 2 KSI |
14 |
4 |
LPI, Bulb-outs, HV crosswalk, APS, Signal upgrade, Speed feedback signs |
LONE TREE WAY & BLACK DIAMOND DR INT #1
3 crashes · 2 KSI · 1 fatal |
2 |
1 |
Protected LT, LPI, LED intersection lighting, HV crosswalk, APS |
10TH ST & F ST INT #2
2 crashes · 2 KSI · 0 fatal |
2 |
0 |
LPI, Bulb-outs, HV crosswalk, APS, Signal upgrade, Ped countdown |
Citywide programs
| Program | Type | Justification (2021–2025) |
|---|
| LPI + APS Rollout (~22 HIN intersections) |
SYS |
1125 signal/ROW crashes (149 post-COVID KSI); LPI CMF=0.13–0.30 ped fatality reduction |
| LED Intersection Lighting (661 dark crashes, 122 KSI) |
LIGHT |
Dark KSI rate 15.6%→22.3%; 42.7% of ped KSI in dark; CMF=0.72 for dark crashes |
| Speed Feedback Signs + Road Diet Eval |
SPEED |
Unsafe Speed = #1 PCF with 478 crashes; KSI rate 10.6%→20.3%; 25 radar signs on HIN corridors |
What we bring & recommended ask
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CCTSAP 2024 provides the action plan foundation — Antioch-specific appendix available. CCTA's adopted countywide CCTSAP covers all CC cities. Antioch should adopt the city-specific appendix by Council resolution and complete the USDOT Self-Certification Worksheet to confirm implementation grant eligibility by May 26, 2026.
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+49.1% KSI rate shift — compelling post-COVID safety narrative. Antioch’s severity shift (11.85%→17.67%) over equal 5-year windows demonstrates the precise data-backed deterioration SS4A reviewers prioritize. SWITRS analysis is complete across all 2,058 city-street collisions (2015–2025).
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FHWA Safe System HIN analysis complete. FHWA-weighted Safe System scoring across all 98 HIN corridors and 210 intersections. LONE TREE WAY (19 KSI) and DEER VALLEY RD (15 KSI) are the top-tier anchors for the application narrative and project location workbook.
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2,058 crashes analyzed with full multivariate breakdown. Pre/post-COVID KSI trends, 66 fatalities documented, ped/bike/alcohol/dark-condition patterns quantified. 234 ped (65 KSI), 661 dark (122 KSI), 259 alcohol (60 KSI) pools are pre-validated for grant narratives.
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HIN-to-countermeasure mapping complete — project identification is done. Every HIN corridor matched to FHWA-eligible countermeasures with cost ranges. Remaining work: formal application narrative, project workbook, and self-certification documentation.
Analysis basis: SWITRS/TIMS 2015–2025 (excl. 2020) · FHWA Safe System HIN methodology · SS4A NOFO FY2026 · CCTSAP 2024 (CCTA) · Deadline: May 26, 2026
SS4A FY2026 — Recommended Implementation Grant
Multi-Corridor HIN Implementation Package
$4.8M – $14.3M federal · 80% federal / 20% local
4 HIN intersections + 3 corridor programs + 3 citywide programs. Balanced portfolio: infrastructure (LPI, LED lighting, raised median, RRFB), speed management, and behavioral programs. LONE TREE WAY + DEER VALLEY RD anchor projects with 34 combined KSI provide the core safety case.
CCTSAP 2024 Countywide
City adoption recommended
⚡ Due May 26, 2026
SWITRS 2015–2025
+49% KSI rate
Why this application portfolio can win
C12 track record: 2 projects, $1.60M funded — proven delivery
Antioch won 2 HSIP projects in C12 ($1.60M) — H12-04-056, H12-04-057. Returning applicants with delivery history score higher. Each prior award provides a direct C13 scale-up template.
Collision profile maps precisely to highest-scoring C13 categories
Dark crashes: 661 (122 KSI) → BCR Lighting (avg C12 grant $1.84M)
Speed #1 PCF: 478 crashes — KSI rate 10.6%→20.3% → BCR Speed calming
Ped: 234 (65 KSI, 27.8% rate) → VRU Special Rule bonus
Bike: 103 (25 KSI) → SA-Bike set-aside
Signal/Broadside: 1125 crashes → BCR Signal+LPI
HSIP award history & statewide comparables
Antioch C12
$1.60M
2 prior projects — direct C13 scale-up templates.
Long Beach C12
$9.7M
Retroreflective sign upgrade — comparable BCR scope for speed management application.
Glendale C12
$8.25M
Signal+LPI+APS citywide — model for BCR+VRU hybrid application.
Recommended C13 portfolio (2021–2025 crash data)
| Application |
Countermeasures |
Category |
Est. range |
Signal Modernization + VRU #1
745 broadside + 234 ped (65 KSI) |
LPI+APS at 22 HIN intersections, Retroreflective backplates, Protected LT, Countdown signals. Builds on H12-04-056. |
BCR VRU+ |
$3–7M |
Intersection LED Lighting #2
661 dark crashes (122 KSI); dark rate 15.6%→22.3% |
LED at 28 HIN intersections; corridor lighting on top 3 HIN corridors; retroreflective backplates |
BCR |
$2.0–6.0M |
Raised Median — LONE TREE WAY #3
LONE TREE WAY: 19 KSI + DEER VALLEY RD: 15 KSI |
Raised median channelization; restrict LT conflicts; ped refuge islands; Protected-permissive LT phasing |
BCR |
$2–6M |
SA-PedCrossing × 2
234 ped (65 KSI); 42.7% dark KSI rate |
RRFBs at unsignalized crossings on LONE TREE WAY + DEER VALLEY RD; curb extensions; ped refuge. Builds on H12-04-057. |
SA-Ped |
2 × $400K |
SA-Bike Safety × 2
103 bike crashes (25 KSI); top HIN corridors |
Class IV separated bike lanes on LONE TREE WAY; bike detection at signals; green conflict zone markings. |
SA-Bike |
2 × $360K |
Speed + Retroreflective Signs
478 speed crashes (#1 PCF); KSI rate 10.6%→20.3% |
Dynamic speed feedback signs (25+); raised crosswalks; retroreflective sign upgrade citywide; automated enforcement study |
BCR |
$2–6M |
C13 Winning Portfolio Formula
App 1 — BCR+VRU: Signal+LPI+APS+Backplates$3–7M
App 2 — BCR: Intersection LED Lighting$2.0–6.0M
App 3 — BCR: Raised Median (LONE TREE WAY)$2–6M
Apps 4–5 — SA-PedCrossing × 2 (different corridors)2 × $400K
Apps 6–7 — SA-Bike Safety × 2 (different corridors)2 × $360K
App 8 — BCR: Speed Mgmt + Retroreflective Signs$1.5–4M
Total C13 target: $6M – $18M · 0% local match · VRU Special Rule qualifies (337 VRU crashes, 90 KSI)
Antioch HSIP application history
| Project ID | Category | Award | Description |
|---|
H12-04-056 |
BCR |
$1.25M |
Signals+LPI+APS: Lone Tree Way corridor |
H12-04-057 |
SA-Ped |
$350K |
RRFBs + HV crosswalk: W 10th St |
What we bring to this application
2 prior HSIP projects prove Antioch delivery. H12-04-056 (BCR, $1.25M), H12-04-057 (SA-Ped, $350K). Each provides a direct template for C13 scale-up. Returning applicants with completion history are scored higher.
+49.1% KSI rate change — powerful post-COVID safety narrative. Antioch's severity shift (11.85%→17.67%) demonstrates the precise safety deterioration HSIP C13 prioritizes. SWITRS 2021–2025 data is fully analyzed: 661 dark (122 KSI), 478 speed (68 KSI), 234 ped (65 KSI), 103 bike (25 KSI).
Post-COVID (2021–2025) crash pools pre-validated for BCR calculation. All HSIP project recommendations based on 5-year post-COVID data only. Crash pools are quantified by countermeasure category — each application has a pre-validated data foundation for BCR submission.
SA-Ped and SA-Bike set-asides are low-risk, high-return. Both SA-Ped and SA-Bike have 80%+ win rates in C12. 73 SA-Ped and 30 SA-Bike projects funded C12 statewide. Submit 2 applications per category on different corridors (LONE TREE WAY + DEER VALLEY RD).
C13 portfolio extends every prior HSIP investment in Antioch. Signal/LPI from H12-04-056 scales to citywide LPI+APS at 22 HIN intersections. Ped crossings from H12-04-057 replicates on LONE TREE WAY and DEER VALLEY RD. Each C13 application directly extends proven C12 work.
SWITRS/TIMS 2021–2025
2 prior HSIP wins (C12)
293 KSI · 66 fatals
BCR · SA-Ped · SA-Bike · VRU