How do cyclists perceive sidepaths


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This presentation presents the results of a Florida Department of Transportation study to quantify how bicyclists perceive the level of accommodation (LOS) of shared use paths adjacent to roadways, sometimes called "sidepaths". The result of this effort was a user validated model that can be used to compare the level of accommodation perceived by cyclists on side paths as compared to on the roadway.

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How do cyclists perceive sidepaths

  1. 1. Theo Petritsch Sprinkle Consulting How do cyclists perceive sidepaths? Introduction Video Ride for Science 2009 Creating the Model(s) people as a pathway two feet from the back of Held at the Museum of Science and Industry curb. However, the plot appears to represent an When analyzing a transportation system for (MOSI) in Tampa, Florida on Saturday, March Regression unrealistic comparison of the two facility types. It bicyclist, how well the users perceive the 21, 2009. is not likely most people would be more components of the system to work for them is an comfortable riding in the bike lane of a two lane important measure of effectiveness. This poster Participants experienced a video simulation roadway with 10,000 vpd and a 55 mph speed y presents the res lts of a Florida Department of results consisting of 22 segments. limit than on a pathway located 10 feet from the Transportation study to quantify how bicyclists roadway. This suggests the two models cannot be perceive the level of accommodation (LOS) of The event captured how well bicyclists used in their base forms to compare roadway to shared use paths adjacent to roadways – perceive a shared use path adjacent to a sidepath facilities. It should be noted that a 5-foot sometimes called sidepaths sidepaths. roadway to meet their needs. minimum buffer from the roadway is the minimum Level of Service Score A ≤ 1.5 separation AASHTO recommends. The result of this effort was a B > 1.5 and ≤ 2.5 user validated model that can C > 2.5 and ≤ 3.5 Identifying an Anchoring Adjustment be used to compare the level D > 3.5 and ≤ 4.5 E > 4 5 and ≤ 5 5 4.5 d 5.5 A possible reason for the above is likely of accommodation perceived F > 5.5 attributable to the participants anchoring their by cyclists on sidepaths as responses based upon the preponderance of compared to on the roadway. Probit pathway facilities shown during the data collection Note: Thi research did not address safety d N This h dd f data event. event To make the models comparative an comparative, (see earlier FDOT study). Nor did it make any anchoring adjustment factor would need to be attempt to identify when a sidepath facility may applied to the sidepath model. By comparing the or may not be appropriate. scores from the 2005 data collection event, which looked exclusively at on street facilities, and the y , Eighty Ei ht participants attended th Vid Rid f ti i t tt d d the Video Ride for scores from this project’s data collection event, an Science 2009. Comparison of the two models adjustment could be estimated. The two data Age, sex, years living in the metro area, and collection events had five roadway segments in miles ridden per week for various purposes were What we did common. The average difference between the collected collected. Participants recent data collection event and the 2005 data Data Collection collection event is 1.15, and thus this value was There were three separate data collection tasks. used. Collection of video responses from volunteer Female 47.5% Male 52.5% participants. Vid was shot using methods ti i t Video h t i th d validated in previous Florida and NCHRP research efforts. This included using a moving bike video platform as shown at right. Collection of geometric and operational data associated with the facilities on the video. The authors would particularly like to thank Pavla Data obtained from a video viewing data Ozkul, Linda Crider, and Michael Munroe. collection event (Video Ride for Science 2009) Finally, we appreciate the support of the project was used t obtain th user perceptions of d to bt i the ti f managers at the Florida Department of sidepaths collected for this research. Transportation and Wilbur-Smith for providing Comparison to roadway LOS the opportunity to work on this important study. As can be seen from lower chart in the column at the left, there are some roadway volumes at left which the LOS for roadways is lower than the LOS score for sidepaths. To some degree this is For more information contact – expected. One could certainly understand how a Theo Petritsch, Sprinkle Consulting, Inc. two lane roadway with 500 vpd and a 25 mph y p p speed limit could be as comfortable to some