The Effects of Commute Trip Reduction Program on Employee Mode Choice

Washington State’s Commute Trip Reduction (CTR) program is an employer-based transportation demand management tool to encourage alternative travel modes for commuting trips. This paper develops a nested logit model to assess the effects of CTR policies on employees’ mode choice, by controlling for employee demographic characteristics and worksite built environment factors. The data were collected from 2015-2016 employer surveys, employee commute surveys, and worksite geospatial dataset. 48,015 employees from 278 worksites were included in the analysis. The results of the study indicate that CTR policies can effectively influence employees’ mode choice, although different policies have varied effects across modes. The model predicts that offering a transportation subsidy, improving worksite amenities, requiring single-occupant vehicle (SOV) parking fees, providing vehicles for emergency use and reserving pre-tax income for transportation expenses can significantly reduce commuters’ probability of choosing to commute via SOV by 3.43%, 2.85%, 2.27%, 1.83%, and 1.76%, respectively; allowing flexible working schedules can increase the probability of avoiding a commuting trip by 1.07%. Overall, a CTR policy package with 6 policy elements can cumulatively reduce the probability of driving alone by more than 18%.

• Supplemental Notes:
  • This paper was sponsored by TRB committee ABE50 Standing Committee on Transportation Demand Management.
• Corporate Authors:

  Transportation Research Board

  ,    
• Authors:
  • Wu, Xiatian
  • Shen, Qing
• Conference:
  • Transportation Research Board 98th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2019-1-13 to 2019-1-17
• Date: 2019

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: 17p

Subject/Index Terms

• TRT Terms: Built environment; Commuting; Demographics; Employees; Logits; Mode choice; Policy; Surveys; Travel behavior; Travel demand management
• Geographic Terms: Washington (State)
• Subject Areas: Highways; Planning and Forecasting; Policy;

Filing Info

• Accession Number: 01697873
• Record Type: Publication
• Report/Paper Numbers: 19-04078
• Files: TRIS, TRB, ATRI
• Created Date: Mar 1 2019 3:51PM