How to Collect Crash Data From CARE

1. How to Collect Crash Data
From CARE
Fatemeh Baratian Ghorghi
PhD Student at:
Auburn University, Department of Civil Engineering

2. What is CARE
• Critical Analysis Reporting Environment
• A data analysis software package designed for problem
identification and countermeasure development purposes.
• CARE implementations have been made for 12 states:
Alabama, Delaware, Florida, Georgia, Iowa, Maryland,
Michigan, Nevada, North Carolina, Rhode Island,
Tennessee, and Wyoming

3. CARE Data
• Data is compiled, collected and utilized by ALDOT for
research and planning
• Confidential
• Shall not be published or released without prior written
consent of ALDOT
• http://caps.ua.edu/

4. Installation of CARE and accessing data
1. Go to downloads
2. Enter username and password
3. Click on CARE installs and agree to disclaimer,
4. Install CARE 10
5. Under Alabama, install datasets of your choosing
6. The program automatically installs and places icon on
your computer.

5. Installation of CARE and accessing data

6. Three different datasets:
1. Crash:
• Counts crashes.
• The day-of-the-week frequency output tells how many
crashes happened on those respective days.
• The most used dataset.
• The driver information in the crash dataset is generally
for the causal driver of the crash, although there are
some second driver variables for the crashes

7. Three different datasets:
2. Driver-Vehicle.
• Obtain age or gender distributions for all drivers (not
just the causal driver), or the make and year of all
vehicles.
3. Person.
• Counts the number of persons with various
characteristics, including all drivers, vehicle occupants,
pedestrians and other non-motorists involved in crashes

8. First work screen

9. Data Source

10. Filter and Date
Date

11. Main Buttons
• File
Exporting Data
Viewing and Exporting Current Codes
• Filter
Convert -applies filter from one dataset to another
Import -recreates filters from past years
Auto-generate –all possible filters for a variable
Delete -deletes existing filter

12. Main Buttons
• Analysis
Frequency –frequency distributions
Crosstab –cross-tabulations
• IMPACT –information mining by variable
Profiling –IMPACT by codes across variables
Locations
Intersection
Segment
Mile-posted
GIS (when available)

13. How to use data
1. Filter creation
2. Use the CARE capability to export variables and codes
into an Excel file.

14. 1- Filter Creation
• The most important capability of CARE we use
• No need to work on Excel file
• Extract data you need

15. 1- Filter Creation
Filter>Create/Modify Filters

16. Filter Creation (WWDCrash)
Double Click

17. Filter Creation (WWDCrash)
Click here first
Then click here

18. Filter Creation (RLR Crash)
Double Click

19. Filter Creation (RLR Crash)
RLR Crash

20. Filter Creation (RLR Crash)

21. Filter Creation (RLR Crash)
• {Primary contributing circumstance=Ran of the signal
OR CU primary contributing circumstance=Ran of the
signal} AND { Traffic control=traffic signal AND Driver
condition ≠ DUI AND Number of vehicle≠1 AND
Emergency status ≠ in police pursuit AND Emergency
status ≠ On emergency call}

22. Frequency of RLR Crashes
Analysis > Frequency>select variables> Ok

23. Frequency of RLR Crashes
Analysis > Frequency>select variables> Ok

24. Crosstab
Analysis > Crosstab >select columns and rows> Ok

25. Crosstab
Analysis > Crosstab >select columns and rows> Ok

26. Hotspots
• One of the most important functions of CARE
• Determination of high crash locations
• Identify problem intersections or road segments

27. Hotspot
Locations> Mileposted StripMap> next> next> Finish

28. Hotspot
Locations> Mileposted StripMap> next> next> Finish

29. Hotspot Map

30. Hotspot Map

31. Generate Reports
• Just the click of the mouse
• Reports include a simple listing of crashes at a particular
location as well as detailed information about each crash
• Export to Microsoft Office products
• Export to GIS
• Analysis results can be mapped in ArcView

32. Hotspot Map

33. 2- Export Variables and Codes
File>Export Data>select variables> Ok> Export to> Ok

34. 2- Export Variables and Codes
File>Export Data>select variables> Ok> Export to> Ok

35. 2- Export Variables and Codes
File>Export Data>select variables> Ok> Export to> Ok

36. ANY QUESTION?