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Quantifying Park & Ride Demand Using LEHD OD Data and Case Study Analysis. GIS in Transit Conference 2013 October 17, 2013. Jonathan Brooks Associate Transportation Researcher Transit Mobility Program Texas A&M Transportation Institute The Texas A&M University System. The Question.

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Presentation Transcript
slide1

Quantifying Park & Ride Demand Using LEHD OD Data and

Case Study Analysis

GIS in Transit Conference 2013

October 17, 2013

Jonathan Brooks

Associate Transportation Researcher

Transit Mobility Program

Texas A&M Transportation Institute

The Texas A&M University System

the question
The Question

Houston

CBD

New ? FBC Park & Ride

park ride market sheds
Park & Ride Market-Sheds
  • Limited by distance
  • Facilities close together may reduce each other’s ridership generation
  • Rider’ willingness to backtrack limited
  • Market-shed most often parabolic shape
  • 50% of riders typically live within 2.5 miles
slide4

Source:

Final Report, New York City Park & Ride Study, January 2012

slide5

Source:

Park-and-Ride Planning and Design Guidelines, Spillar (1997)

demand estimation model simplified steps
Demand Estimation ModelSimplified Steps
  • Identify case study sites, obtain ridership data
  • Obtain OD worker flow volumes from LEHD
  • Calculate mode capture rates
  • Apply capture rates to potential new sites
location of case study facilities
Location of Case Study Facilities

Houston Metro P&Rs:

Spring

Kingwood

Townsen

Bay Area

Grand Parkway

Kingsland

Cypress

Northwest Station

28 mi

21 mi

27 mi

21 mi

20 mi

27 mi

FBC Transit P&Rs:

AMC Movie Theater

University of Houston

CBD

25 mi

5 miles

22 mi

10 miles

24 mi

24 mi

20 miles

observations about metro sites
Observations about METRO Sites
  • 2.5 mi radius circle covered about 37% of riders (2009 & 2012 license plate data)
  • Parabola can describe general distribution
  • Findings generally coincided with literature
summary of case study
Summary of Case Study
  • Average distance to CBD: 24.3 miles
  • Average peak weekday CBD bound riders: 726
  • Average # of inbound bus trips: 25
  • Typical headway in peak of peak: 3 minutes
longitudinal employer household dynamics lehd us census
Longitudinal Employer-Household Dynamics (LEHD), US Census
  • Annual data
  • Links home to work Census Blocks
  • Work data, not exactly travel data
  • OnTheMap is the online tool
paired analysis for od flows
Paired Analysis for OD Flows
  • Selected 2.5 mile radius around P&R
  • Selected 1 mile radius to encompass CBD
  • Tabulated OD volume between two sites, by income bracket
    • $1,250 per month or less
    • $1,251 to $3,333 per month
    • More than $3,333 per month
step 1 select analysis sites
Step 1. Select Analysis Sites

2.5 mile radius circle around facility used to identify home Census Blocks

1 mile radius circle around CBD used to identify work Census Block

case study findings
Case Study Findings

Based on analysis of the 2.5 mile radius around case study METRO park & rides:

  • Average weekday CBD bound riders: 767
  • Average LEHD worker flow to CBD: 1,579
  • Park & ride modal capture ratio: 18%
    • Lowest three sites 11%
    • Highest three sites 28%
potential new park ride
Potential New Park & Ride

Current FBC Facilities:

AMC Movie Theater

University of Houston

CBD

5 miles

22 mi

10 miles

24 mi

20 miles

questions

Questions?

Jonathan Brooks

J-brooks@ttimail.tamu.edu