117935 | Philadelphia Trip Generation Model 2022-23

The project will be undertaken in three phases. The first phase will design and build the tools software and user interface, assemble various transportation and land use datasets, and create a data collection plan and tablet-based survey instrument. It is assumed that the software will be an extension and modification of DVRPCs TIM data viewer and the geographic level of analysis will be the travel models Traffic Analysis Zones (eg, Census Block Groups in Philadelphia).
Phase II will focus on site selection and data collection. This phase will be deferred until FY2023 to avoid any temporary travel behavior changes due to the COVID-19 pandemic. The final phase will analyze the collected data, develop the relationships between input and output variables, and validate the tool for mixed-use developments in Philadelphia. A Users Guide with instructions for using the tool will be written as part of Phase III. This phase will begin in FY2023 and continue into FY2024. Later phases could be added to extend the tool to urban areas in other counties in the DVRPC region.
This project may require the purchase of goods and/or services, including temporary survey workers.
Tasks
Phase I Software Development Tasks:
1. Coordinate with Philadelphia Planning Commission and Office of Transportation, Infrastructure, and Sustainability to identify the tools functions and outputs.
2. Review relevant literature on adjustments to ITE Trip Generation Rates.
3. Specify software design including functionality, interface, background layers and tiles, input data, calculations to perform, output data, graphics and reports, and results for download and export results.
4. Prepare GIS and other existing datasets including retail employment, accessibility measures, transit score, distance to transit stations, parking availability and cost, occupied housing units, land-use mix/entropy variable, level of bicycle traffic stress, sidewalk connectivity, density, and real estate characteristics.
5. Prepare ITE Trip Generation Rate and TIM3.1 travel model data for comparisons to model outputs.
6. Populate PostGRES database by exporting GIS and VISUM datasets.
7. Modify TIM Data Viewer and add functions to view existing input datasets, to modify input data to account for proposed developments, and to calculate and report person trips by vehicular, transit, bicycle, and pedestrian modes for AM and PM peak periods.
8. Modify Data Viewers Tile Server to display additional layers.
9. Create Python scripts to facilitate data import and calculations.
10. Modify zonal reporting, downloading, and exporting functions.
Phase II Data Collection Tasks:
1. Coordinate with Philadelphia Planning Commission and Office of Transportation, Infrastructure, and Sustainability to identify candidate sites to survey. Coordinate with neighborhood groups and improvement districts on outreach to building owners and managers.
2. With assistance from PCPC and oTIS, create data collection plan, specify site characteristics, and identify candidate sites.
3. Interview, hire, and train temporary surveyors.
4. Prepare data collection schedules and itineraries.
5. Create intercept survey form and code survey onto tablet computers.
6. Execute Survey
7. Tabulate and process survey data, clean data, and expand survey results.
Phase III Model Estimation and Validation Tasks:
1. Perform regression analyses and other calculations to determine AM and PM peak period person trip rates for mixed-use developments in Philadelphia as a function of location, dwelling units, parking supply, and retail employment.
2. Perform regression analyses and other calculations to determine AM and PM peak period mode shares for vehicular, transit, bicycle, and pedestrian trips.
3. Incorporate calculated relationships into Philadelphia Trip Generation Tool
4. Configure Tool to be hosted on City of Philadelphias server and website..
5. Test and validate tools predictions by predicting trip rates for additional sites, collecting data at those sites, and comparing predicted to observed results.
6. Modify model as needed.
7. Prepare Users Guide and Instructions.