Affordable Housing Trip Generation Strategies and Rates

This project seeks to understand more about the transportation impacts of affordable multifamily housing.The research team will collect information about multimodal trip generation from a number of affordable and market rate multifamily housing sites in California. From these data, a method to estimate the multimodal trip generation characteristics of affordable multifamily sites and the anticipated impacts of various Transportation Demand Management policies will be developed. In addition, this data can be used to develop models to estimate vehicle miles traveled (VMT), car ownership, and non-automobile trip making at the household level. Providing a more accurate assessment of the transportation impacts allows for better accommodation as well as better inputs into local or regional estimates of future vehicle miles traveled, emissions and other environmental and social outcomes. Transportation engineers and planners use the Institute of Transportation Engineers' (ITE) trip-generation and parking rates as the basis for most transportation impact analyses (TIAs) of proposed land use development projects in the U.S. These TIAs identify traffic and parking impacts and related infrastructure mitigations, fees, and parking provision needs. However, the ITE Handbook (2004) states that ITE's trip generation data is not accurate for land use projects located in places with public transit, transportation demand management (TDM) strategies, or for “affordable” (subsidized) housing. However, there is no data or method available in the U.S. to assess such projects. Site-specific TDM strategies, such as car-sharing or the provision of transit passes to residents, can reduce automobile ownership and vehicle trip rates; however, there is currently no on-site cordon count data available documenting the effects of subsidization or the provision of site-specific TDMs at multi-family housing acceptable for use in traffic impact analyses. As a result, practitioners incorrectly estimate – and therefore potentially fail to adequately pursue – transportation, economic, social, and environmental benefits that can be gained by increasing the supply of affordable multifamily housing in urban areas or implementing effective demand management strategies at project sites. Provision of adequate site-specific data and an estimation method will assist the California Department of Transportation (Caltrans) Local Development–Intergovernmental Review (LD-IGR) Program regarding the effectiveness of mitigation suggestions that they make to local jurisdictions. The project seeks to understand more about the transportation impacts of affordable multifamily housing. The research team will collect information about multimodal trip generation from a number of affordable and market rate multifamily housing sites in California. From these data, a method to estimate the multimodal trip generation characteristics of affordable multifamily sites and the anticipated impacts of various transportation demand management (TDM) policies will be developed. In addition, these data can be used to develop models to estimate vehicle miles traveled (VMT), car ownership, and non-automobile trip making at the household level. Providing a more accurate assessment of the transportation impacts allows for better accommodation as well as better inputs into local or regional estimates of future vehicle miles traveled, emissions and other environmental and social outcomes.

  • Supplemental Notes:
    • Contract to a Performing Organization has not yet been awarded.

Language

  • English

Project

  • Status: Active
  • Sponsor Organizations:

    California Department of Transportation

    Sacramento, CA  United States  95819
  • Project Managers:

    AbouKhadijeh, Hassan

  • Principal Investigators:

    Clifton, Kelly

  • Start Date: 20150831
  • Expected Completion Date: 20180430
  • Actual Completion Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 01620026
  • Record Type: Research project
  • Source Agency: California Department of Transportation
  • Files: RiP, STATEDOT
  • Created Date: Dec 28 2016 11:39AM