M. Replogle, “Integrating Pedestrian and Bicycle Factors into Regional Transportation Planning Models: Summary of the State-Of-The-Art and Suggested Steps Forward,” Urban Design, Telecommunication and Travel Forecasting Conference: Summary, Recommendations and Compendium of Papers, Travel Model Improvement Program, Williamsburg, 27-30 October, 1996, pp. 75-94.

has been cited by the following article:

• TITLE: Temporal Stability and Transferability of Non-Motorized and Total Trip Generation Models

  AUTHORS: Judith L. Mwakalonge, Juhann C. Waller, Judy A. Perkins

  KEYWORDS: Non-Motorized; Trasferability; Temporal; Total Travel

  JOURNAL NAME: Journal of Transportation Technologies, Vol.2 No.4, October 31, 2012

  ABSTRACT: Transportation systems provide a means for moving people and the goods from which they are spatially separated. Of the two means of surface transportation, the motorized mode is used extensively for utilitarian travel in developed countries. The increasing reliance on motorized travel has contributed to increased traffic congestion, air pollution, and greenhouse emissions. Non-motorized travel has recently received significant attention as a means to reduce congestion and environmental problems and improve human health. However, non-motorized modeling is generally underdeveloped. This study investigated some changes in non-motorized and total travel and the characteristics of the traveling public in 1990, 1995, 2001, and 2009 using a national travel survey. The study also investigated the temporal transferability of linear-regression trip generation models for non-motorized and total travel under such changes. High-income households made fewer non-motorized trips in 1990 and 1995 compared to 2001 and 2009. Persons aged 50 and over showed an increased demand for non-motorized travel, whereas children aged 0 - 15 showed a decreasing preference for non-motorized travel over time. Regarding temporal stability, only the coefficient for single-adult households with no children was stable across all of the analysis years. For both non-motorized and total travel, most model parameter estimates were stable short term but not long term. In general, the total travel models transferred better than non-motorized models, both short term and long term. Despite not finding universal stability in model parameter estimates, the models were marginally able to replicate travel in 2009 relative to the locally estimated 2009 model.