making people count! - itre...may 09, 2013 · intern kristy jackson ... qa/qc and data validation...
TRANSCRIPT
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Making People Count!An Introduction to NC’s Non‐Motorized Volume Data Program
May 12, 2016
NCAMPOConference
KRISTY JACKSON Bicycle and Pedestrian ProgramInstitute for Transportation Research and Education
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North Carolina’s Non-Motorized Volume Data Program (NMVDP) is a research project to test a bicycle and pedestrian count protocol and replicate this methodology across the state.
What gets measured, gets done.If you’re not counted, you don’t count!
NCDOT Sponsored Research Project
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PROGRAM INTERN
Kristy Jackson Research [email protected]
Sarah O’Brien Program [email protected]
Meredith [email protected]
Sarah SearcyResearch [email protected]
BICYCLE AND PEDESTRIAN PROGRAM STAFF:
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Motivations behind NMVDPUse of AADPT and AADBT estimations
Project Prioritization and Funding
Planning Decisions
Complete Streets Policy Implementation
Operations and Maintenance
Need common, consistent system to measure volume to:
Understand current trends and model future usage
Evaluate at different levels (site, corridor, region)
Share data
Annual Average Daily Traffic(AADT)
Annual Average Daily Pedestrian Traffic
(AADPT)
Annual Average Daily Bicycle Traffic (AADBT)
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Non-Motorized Volume Counts
Manual Short Duration Continuous
Project/Context Specific Trends/Patterns
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ContinuousCounts
Short Duration Counts
Continuous Count Stations – Permanent counting sites that provide data continuously (24 hours per day, 7 days per week).
Winston‐Salem, NC
Charlotte, NC
Enough data should be collected to allow calculation of accurate adjustment factors (Time of Day, Day of Week, Monthly) to apply to Short Duration Counts.
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NC’s “State of Practice”
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17 agencies have or plan to conduct counts
Most counts are short duration, manual counts
Collected for specific projects or as part of ‘add‐on’ to intersection turning movement study
CCS installed independently* on trails by park/rec departments: Greensboro, Charlotte, and Chapel Hill*(Not part of NC NMVDP)
Turning Movement Data Plot (PDF)05/09/2013 6AM – 10PMN Harrison Ave at NW Maynard RdCary, NC
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National State of Practice
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FHWA Traffic Monitoring Guide (Ch. 4)
NCHRP Report 797 & Web Only Doc. 205
TMG Format for bicycle and pedestrian counts
Peers: Colorado DOT
MnDOT
Local/Regional Programs Delaware Valley Regional Planning Commission
San Diego State University (SANDAG)
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CCS Sites (13)SDC Sites (22)
Phase I: Pilot Region
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NON‐MOTORIZED TRAFFIC MONITORING PROGRAM ELEMENTS
Coordinated Data
CollectionSampling Plan
Training
Site Selection
Local Agency Coordination
Data Collection Methods
Equipment Purchasing and Support
Equipment Vendor
Coordination Equipment Installation Oversight
QA/QC and Data
Validation
Data Cleaning & Correction
Reporting
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Local Agency Coordination
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What’s In It For Agency? Equipment
Technical assistance / Training
Access to validated, cleaned data
What’s In It For NCDOT? Critical local knowledge
Installation assistance
Monitoring/maintenance assistance
Established relationships
Continuous Count Station Collecting Data Martin Luther King Blvd, Chapel Hill, NC
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Station Installation DiagramMartin Luther King Jr Blvd
Chapel Hill, NC
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Retrieve / compile data Monitor equipment
Perform regular checks on the data
Conduct validation study Precision and accuracy of the
count
Quality Control of the Data
Continuous Count Station, Brevard GreenwayBrevard, NC
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American Tobacco TrailDurham, NC
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Derive adjustment factors from continuous count data
Derive expansion factors from sampling plan for each site type
Develop AADT numbers Apply adjustment factors
Apply error correction factors
Extrapolate observed counts for short‐duration site AADTs
Explain any statistical uncertainties
Analyze Data
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More Patterns!
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Project Expansion
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2014 Phase I Pilot: NCDOT Division 7 and 92015 Phase II Project Expansion: NCDOT Divisions 4, 5, 8 and 10
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2015 – 2018: Economic Impact of Shared Use Paths Research Project
Trail user surveys and count sampling
Opportunity to understand seasonality, expand CCS program
Provide extrapolation figures for economic, health, and transportation
Additional NMVDP StationsLocations:
Brevard Greenway – Brevard, NC
Crabtree Creek Greenway – Raleigh, NC
Duck Trail – Duck, NC
Yadkin River Greenway – North Wilkesboro, NC
American Tobacco Trail – Downtown Durham, NC
Learn more!
Session 3 on Thursday (1:30‐3PM) with Sarah O’Brien (ITRE) and Matt Hayes (Alta)
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ANTICIPATED NMVDP CONTINUOUS COUNT STATIONS (LATE 2016)
Pedestrian CCS ‐ 54
Bicycle CCS ‐ 50
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1. Geospatial sampling
2. Site selection methods
3. Data collection methods
4. Equipment procurement
5. Equipment installation
6. Equipment validation
7. Development of adjustment factors
8. Technical support
9. Maintenance troubleshooting
10. Coordination with short duration count vendors
11. Coordination of state and local agency partners
12. Standardization of data inputs
13. Quality assurance and quality control checks on data
14. Data management and reporting
15. Data analysis
16. Development of annualized statistics
Elements of a Volume Data Program
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Informational Webinar Introduction to the program
1‐Day Workshop Audience: bike/ped coordinators,
planners, greenway/parks and recreation managers, engineers, transportation professionals
Detailed information on programmatic elements
Training and Resources
Pilot Project Training , Site Selection Field Visit Greensboro, NC
itre.ncsu.edu/focus/bike‐ped/
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NMVDP Program Website Phase I – Count Station Overview
and Data Summary
Phase I ‐ CCS Data Download
Detailed Project Report (coming soon!)
Site Selection Paper
Program Level QAQC Processes
CCS Installation Video / Photos
Training and Resourcesitre.ncsu.edu/focus/bike‐ped/
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ject
Web
site
itre.ncsu.edu/focus/bike‐ped/nc‐nmvdp/
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Consider: Installing a CCS to collect bicycle and/or
pedestrian counts Validating equipment and performing
QA/QC on data
Share data using TMG data format When collecting SDC Counts:
7 consecutive days, 24/7 is recommended best practice
Count when volumes are expected to be high (spring, fall) and avoid bad weather
Use digital format, keep good metadata
What You Can Do!
Become familiar with the NCHRP 797 Guidebook
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What will you use the data for?
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Inventory statistics Route planning / Connectivity
analysis Project planning and
development Inter‐agency coordination Project selection/prioritization Determining unmet need School siting Access to recreation amenities
Relate spatial datasets (eg. crash data)
Development of goals/benchmarks
Data gaps/deficiencies Compare assets Facilities Maintenance Research Funding Promote physical activity
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Thank You!
KRISTY JACKSONResearch AssociateBicycle and Pedestrian [email protected]
INSTITUTE FOR TRANSPORTATION RESEARCH AND EDUCATION
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