1. Roadway Data Governance
Acadiana Planning Commission
Lafayette, Louisiana
Roadway Data Governance

2. History
LA Department of Transportation and Development performed a significant data collection on all of the roadways in Louisiana
Data that needs to be maintained
Gaps remaining
Technical assistance from FHWA to develop a plan for managing and updating data
About 3 Fugro elements – Right and Left Turn Lanes, Toll, Terrain, Pavement Type, Number of Lanes, Intersection Control, Grades, Vertical/Horizontal Curve, HOV Lanes, Rail crossings, Sidewalks, ect
how the data was collected – Video – ran van along all roads
Data gaps – traffic count data, other MIRE elements on local roads

3. Framework for Maintaining Local Data
Acadiana Planning Commission – regional 7 county planning commission
Planning Commission Staff - state and local councils for GIS data development
Regional Aerial Data Collection and Coordination Effort
Framework for Maintaining Local Data
Also have 8 parish/county regional safety coalition – have included the parish from that region
State GIS council – developing schema for local and state roads – intend to integrate that
Aerial data is orthos and obliques – high level imagery

4. Data Governance Group LA-DOTD is also a significant partner
Stakeholders from all levels of local government:
Public Works
Sheriff’s Office
911 Commission
Tax Assessors
LA-DOTD is also a significant partner
By having a group, it provides legitimacy to the work that we are doing. Most local agencies work in silos and not regionally, so by working together we could demonstrate the benefit of sharing the information. The local agencies would receive a data collection that was better than what they could develop on their own.
Sheriff’s offices might seem like outliers, but they have a clear need for public safety and have much of the best information on roadway locations, addressing, and even traffic count data. Several of the Sheriff’s offices in the region have speed trailers that also collect a significant amount of ADT information since they will leave them at the location for a week or two.
The State DOT has been an invaluable resource in working with the local agencies and providing them with much needed data

5. Duties of the Data Governance Group
Guidance on local data collection
Guidance on data conflation
Provide a framework for implementation
For instance, we had to rely on several relationships between group members to receive the data collection. We had to have one assessor call another assessor to show legitimacy to provide the data. However, we did run into one agency that refused to provide any information, saying that the data was proprietary.

6. Project Outline
Maintain primacy of state data and edit it as the base map with state schema
Develop a methodology for updating the data
Obtain Data

7. Range of Local Roadway Data
GIS
Full set of roadway information
State DOT data
Access Database
Focused on segment condition and some characteristic data
Public Works Department in Mid Sized County
GIS and Access Database
Location and addresses
Aerial imagery
Assessor and 911 Commissions
Characteristic data – lane widths
Planning Commission also has aerial data

8. Local Count Data ID Road Name Average Daily Count Speed Limit
Percent Vehicles Exceeding Limit by 10 Miles or More
Speeding Time 1
Austin
327 40
77%
Day and night 2
Beck Miller
874 20
47% 3
Cheramie
665
48%
Morning and afternoon to evening 4
Cosay
243 45 1%
Morning to midafternoon 5
Flagstation
434 35
59%
Morning 6
Lawyer
734 4%
Morning and afternoon 7
Longwood
297
14%
Afternoon into evening 8
Meche
516
15% 9
Nonc Lol
250
Afternoon 11
Oscar Rivette
557
12% 12
Rainbow
195
Late night 13
River Birch
176 3%
Morning and afternoon into evening 14
Soileau
2201 15
Sugar Mill 43
Mid day 16
Gulino
336
Day and all night

9. Data Integration 3 Levels of Data: Roadway Locations Aerial Imagery
Databases

10. Missing Segment
Missing Segment

12. Process for Maintaining and Distributing Data

13. Maintenance Methodology
Utilizing ESRI crowdsource programming for low tech workers to provide information
Working with local agencies to provide information on an annual basis

14. https://arcg.is/0juzri

17. Implementation of Data Collection
Utilize roadway locations, new volumes, and characteristic data for Local Road Safety Plan update and safety project development
Roadway locations key for spatial analysis – frequently have a spike in crashes on new roadway segments and widenings

18. Contact Information
Ashley Moran, Planner II
Phillip Breaux, GIS Analyst