HIGHWAY SAFETY RESEARCH GROUP. Safety Analysis Tools Used for Coalitions and Districtwide Safety Investment Plans

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1 Safety Analysis Tools Used for Coalitions and Districtwide Safety Investment Plans

2 3 Levels of Analysis SHSP Dashboards LOSS Dashboard GIS Tool

3 SHSP Dashboards

4 Strategic Highway Safety Plan The vision of the Louisiana Strategic Highway Safety Plan ( LA SHSP) is to reach Destination Zero Deaths on Louisiana roadways, with an intermediate goal of reducing fatalities/serious injuries by 50% in the year The mission of the LA SHSP is to reduce the human and economic toll on Louisiana s surface transportation system due to traffic crashes through widespread collaboration and an integrated 4E approach. Enforcement Education Engineering Empowerment

5 Louisiana Regional Safety Coalitions 9 Regional Safety Coalitions across the state Involve Numerous Agencies Address local needs and concerns Facilitate the development of action plans Use the procedures of the LASHSP to identify problems and produce countermeasures

6 Louisiana Regional Safety Coalition Data To aid each Safety Coalition, HSRG maintains Tableau dashboards corresponding to 3 Levels : Level 1: Emphasis Area Selection Level 2: Target Setting Level 3: Problem Diagnosis (Drill-Down)

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8 Level 1 Identify Problem Areas (Emphasis Area Selection) Major Reasons for Injuries and Fatalities Target Area Trend Target Comparison/Ranking http/datareports.lsu.edu/shsplevel1.aspx

9 Level 1 Identify Problem Areas (Emphasis Area Selection) Capital Region Fatal Crashes - Capital Region Coalition Selected - Fatal Selected Target Areas: Roadway Departures Alcohol Involved No Restraint Young Driver

10 Level 2 Setting Target Measures Determine Appropriate Expected Reductions Display Actual Counts Compare Actual Counts to: Forecasted Counts SHSP Goal 5-Year Moving Average

11 Level 2 Setting Target Measures New Orleans Region Intersection Fatality Crash Information At/Below SHSP goal for intersection fatalities

12 Level 3 Addressing Identified Problems Dashboard Types Crash Person Driver (Vehicle) Bike/Pedestrian Crash Characteristics Timeframe of Crashes (Year, Month, Day of Week, Hour Range) Infrastructure (Highway Type, Roadway Type) Demographic (Age Group, Gender, Race) Behavioral (Alcohol/Drug Related, Restraint Use Manner of Collision Contributing Factors

13 Level 3 Crash Capital Region Fatal Alcohol Involved Crash Information

14 Level 3 Bicycle/Pedestrian Capital Region Bicycle Fatalities

15 SHSP Normalized Dashboards Display Normalized Comparisons Vehicle Miles Traveled Licensed Drivers

16 Benefits of SHSP Dashboards Interactive Easy to Access & Use Promote Visual Data Insight Discovery Aid Informed Decision-Making

17 SHSP Dashboards Demo

18 LA DOTD Safety Network Screening Dashboard

19 Network Screening 19

20 Network Screening Options Crash Frequency Crash Rate EPDO Relative Severity Index Critical Rate Calibrated HSM Models (SafetyAnalyst) Regression Modeling (SPF/LOSS) Excess Proportion of Specific Crash Types Systemic Approach 20

21 LOSS 21

22 Regression Modeling Louisiana Specific SPF - Rural 2 Lane - Roadway Segments 22

23 Regression Modeling Rural 2 Lane SPF CURE plot 23

24 Hwy Exits Not Exits HIGHWAY SAFETY RESEARCH GROUP SPF Development Status used in new CAT Scan not used, no SPF; not needed (too few crashes or sites) develop SPF explore the potential to develop norms - already have SPF explore the potential to develop SPF & norms 2-Lane Rural 2- Divided 4-Lane 4- Divided 6- Lane 2- Lane Urban 2- Divided 4-Lane 4- Divided 6- Lane 4-Leg Unsignalized 3-Leg 4-Leg Signalized 3-Leg 4-Leg Unsignalized 3-Leg 4-Leg Signalized 3-Leg 24

25 Network Screening Lists

26 Abnormal/High PSI List Rank within Control Log Parish Crashes 3-yr map type Type Loc Highway Class Section Log Mile Mile2 Route District Num Parish Name Regional Coalition ADT ADT2 Avg map 1 High PSI Section Rural 2-lane LA Livingston Capital map 2 High PSI Section Rural 2-lane LA Livingston Capital map 3 High PSI Section Rural 2-lane LA Iberville Capital map 4 High PSI Section Rural 2-lane US St. Landry Acadiana map 4 High PSI Section Rural 2-lane LA Livingston Capital map 6 High PSI Section Rural 2-lane LA Ascension Capital map 6 High PSI Section Rural 2-lane LA St. James South Central map 8 High PSI Section Rural 2-lane LA Iberia Acadiana map 8 High PSI Section Rural 2-lane LA Livingston Capital map 10 High PSI Section Rural 2-lane LA Livingston Capital map 10 High PSI Section Rural 2-lane LA St. Martin Acadiana map 12 High PSI Section Rural 2-lane LA Avoyelles Central map 12 High PSI Section Rural 2-lane LA Rapides Central map 12 High PSI Section Rural 2-lane LA East Baton Rouge Capital map 12 High PSI Section Rural 2-lane LA Livingston Capital map 12 High PSI Section Rural 2-lane LA Pointe Coupee Capital map 12 High PSI Section Rural 2-lane LA St. Tammany North Shore map 18 High PSI Section Rural 2-lane LA Caddo Northwest map 18 High PSI Section Rural 2-lane LA Rapides Central map 18 High PSI Section Rural 2-lane LA St. Tammany North Shore map 18 High PSI Section Rural 2-lane LA Washington North Shore map 18 High PSI Section Rural 2-lane LA Livingston Capital map 18 High PSI Section Rural 2-lane LA Livingston Capital map 18 High PSI Section Rural 2-lane LA Iberville Capital map 18 High PSI Section Rural 2-lane LA Vermilion Acadiana map 18 High PSI Section Rural 2-lane LA Sabine Central map 18 High PSI Section Rural 2-lane LA St. Martin Acadiana map 28 High PSI Section Rural 2-lane LA Lafayette Acadiana map 28 High PSI Section Rural 2-lane LA Livingston Capital

27 LOSS Dashboard LOSS Index information for roadways in Acadia parish based on all crashes.

28 LOSS Dashboard LOSS Index information for roadways in Acadia parish based on fatal, moderate, and severe crashes.

29 LOSS Dashboard LOSS Index information for roadways in Acadia parish based on fatal, moderate, and severe crashes. Drill down to fatal/alcohol crashes.

30 GIS Web Application (InDevelopment)

31 Components Map Filter Selection Data Table and Export Filter Query View Benefits Easy access to crash-specific data Map visualization of crashes by severity level Robust filtering system Mapping crashes aids in data quality (i.e., identifying incorrect lat/long)

32 Filter Selection 2017 Fatal Crashes Lafayette Parish State Roads Intersection

33 High-Level Map View Drill-Down Map View

34 Drill Down: Single Crash Data Table with Export Option Crash Information Filter Query View _

35 CAT Scan Diagnostic tool Requires crash data, highway class, AADT, and project information Quality Assurance capability Plots location on SPF/Indicates LOSS Conducts Pattern Recognition Analysis

36 Vision Zero Suite Plot to SPF Requires project information Plots location on SPF/Indicates LOSS Conducts Pattern Recognition Analysis Benefit-Cost Tool

37 Thinking Ahead

38 Web Address crashdata.lsu.edu

39 Contact Information David Whitchurch Phone: April Renard, P.E.,PTOE Phone: