@article{cook_sarah w. o'brien_jackson_findley_searcy_2016, title={Behavioral Effects of Completing a Critical Link in the American Tobacco Trail}, volume={2598}, ISSN={["2169-4052"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84976295627&partnerID=MN8TOARS}, DOI={10.3141/2598-03}, abstractNote={ This study responded to a unique opportunity to determine behavioral changes that resulted from the construction of a critical link of the American Tobacco Trail (ATT) in Durham, North Carolina. Observational data were collected both before and after construction of a bicycle-and-pedestrian bridge that linked two separate segments of the regional greenway. Before construction of the bridge and trail connections, the two segments of the ATT were separated by Interstate 40. Heavy traffic on local streets as well as a lack of bicycle and pedestrian facilities in the area provided additional barriers to active travel between the two ATT segments. The Institute of Transportation Research and Education conducted intercept surveys and manual counts on the two trail segments before and after construction of the bridge. The before-and-after data were compared to determine the changes that occurred in the use of the ATT and the accompanying social, public health, transportation, and economic effects. }, number={2598}, journal={TRANSPORTATION RESEARCH RECORD}, publisher={SAGE Publications}, author={Cook, Thomas J. and Sarah W. O'Brien and Jackson, Kristy N. and Findley, Daniel J. and Searcy, Sarah E.}, year={2016}, pages={19–26} }
 @article{jackson_stolz_cunningham_2015, title={Nonmotorized Site Selection Methods for Continuous and Short-Duration Volume Counting}, ISSN={["2169-4052"]}, DOI={10.3141/2527-06}, abstractNote={ This paper outlines the process for selecting sites to perform counts on transportation facilities in the context of establishing a nonmotorized traffic volume counting program. Many agencies are well practiced in collecting motor vehicle traffic counts and estimating annual average daily traffic volumes for motor vehicles on the basis of knowledge founded on years of research and experience. Selecting sites is one component of developing a consistent system for quantifying nonmotorized travel so bicycle and pedestrian volumes can ultimately feed into tools to measure existing trends and model future increases in nonmotorized trips at site, corridor, and regional levels. The outcome of collecting count data can ultimately assist in evaluating facility usage over time, better inform the project prioritization process, and provide evidence to support nonmotorized facility inclusion through Complete Streets planning and improve planning for active transportation. This paper outlines the goals of a nonmotorized traffic monitoring program and objectives of the site selection process. From the experience of a pilot project conducted by the North Carolina Department of Transportation, the site selection method details the following components: gathering potential sites, conducting a site visit, gathering additional data needed to inform the decision-making process, and ultimately selecting sites and developing an equipment inventory. }, number={2527}, journal={TRANSPORTATION RESEARCH RECORD}, author={Jackson, Kristy N. and Stolz, Elizabeth and Cunningham, Christopher}, year={2015}, pages={49–57} }
 @article{o'brien_jackson_vosburgh_findley_2015, title={Rumble Strip Gaps for High-Speed Bicycles}, volume={2520}, ISSN={["2169-4052"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84976509792&partnerID=MN8TOARS}, DOI={10.3141/2520-05}, abstractNote={ Shoulder rumble strips (SRSs) are a proven safety countermeasure that reduces motor vehicle lane departures; however, they may be seen as an impediment to bicycle travel because they decrease comfort for bicyclists and can affect riders' control while bicycling. Existing literature provides recommendations for the placement of regular gaps in SRSs, but the supporting research is limited to low and moderate bicycle speeds. Roads with SRSs along long, steep grades present a unique set of risks for cyclists because of the possibility of higher bicycle speeds. This study evaluated how variations in SRS gap lengths and shoulder widths affected bicyclists' ability to maneuver through these gaps when riding at higher than average speeds. The findings suggest that as gap length increases, bicyclists may increase downhill speed while reporting fewer instances of discomfort when attempting to cross larger gaps. The likelihood of a bicyclist hitting a simulated rumble strip while crossing a gap decreases modestly as the gap size increases. Shoulder widths in excess of 4 ft do not appear to significantly influence bicyclists' capability of maneuvering across different gap lengths and had only a minor effect on bicyclists' speeds. }, number={2520}, journal={TRANSPORTATION RESEARCH RECORD}, author={O'Brien, Sarah Worth and Jackson, Kristy N. and Vosburgh, Erik and Findley, Daniel}, year={2015}, pages={32–40} }