The National Academies Press

Currently Skimming:

Pages 280-294

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.

From page 280... ... 280 Appendix D: Research Problem Statements Introduction This appendix provides a series of gap-filling research plans to support the development of reliable, valid, and replicable evaluations of pedestrian QOS, including both operational and satisfaction measures. These plans were originally prepared for consideration as research activities during Task 6 of NCHRP Project 1787, but were ultimately not selected. Read the entire page →
From page 281... ... 281 Table D1. Summary of CMFs for Pedestrian Safety Countermeasures (Adapted from NCHRP 17-73) Read the entire page →
From page 282... ... 282 Cost The following assumptions have been made in developing cost estimates:  Cost per camera: $200 (includes two 2-hour periods)  Processing time per 1 hour of video: 2 hours  Processing cost per 1 hour of video: $30  Intercept survey: 2 people collecting on two days, one weekend day and one weekday for a total of 4 hours per site ($60 per hour for two people) Read the entire page →
From page 283... ... 283  Checking impact of factors listed in HCM as potentially affecting pedestrian QOS that are not currently included in method  Addressing limitations of the HCM method identified in the literature and through interviews Justification The current HCM urban street method has been criticized for being too data-intensive to be usable for large-scale planning, or even smaller-scale studies, for sometimes producing counterintuitive results, and for not incorporating environmental and aesthetic factors. A variety of alternative pedestrian QOS measures have been proposed in the literature, but have only received limited testing (e.g., in one city only) Read the entire page →
From page 284... ... 284 Table D3. Cost for Urban Sidewalk QOS Study. Read the entire page →
From page 285... ... 285  Cost per camera: $200 (includes one 12-hour period)  Processing time per 1 hour of video: 1 hour  Processing cost per 1 hour of video: $30  Intercept survey: 2 people collecting on a high pedestrian volume day for a total of 4 hours per site ($60 per hour for two people) Read the entire page →
From page 286... ... 286 Performance Measures During the post-processing of the video data, we propose to collect the following metrics:  Pedestrian and MV traffic volume, including turning movements on all approaches  Intersection type and other environmental factors  Pedestrian behavior From intercept surveys:  Pedestrian satisfaction Cost The following assumptions have been made in developing cost estimates:  Cost per camera: $50 (includes one 2-hour period)  Processing time per 1 hour of video: 2 hours  Processing cost per 1 hour of video: $30  Intercept survey: 2 people collecting on one weekday for a total of 2 hours per site ($60 per hour for two people) Read the entire page →
From page 287... ... 287 assumes that pedestrians are unaffected when they must cross stop-controlled side streets, under the theory that side-street traffic must stop and give the right-of-way to crossing pedestrians. However, the influence of turning traffic from the major street is not considered. Read the entire page →
From page 288... ... 288 Schedule Each study would take approximately 4 months from start to finish. Group 3: Operational Measures This research activities in this group focus on questions related to pedestrian operations on sidewalks and crosswalks. Read the entire page →
From page 289... ... 289  Pedestrian direction of crossing  Time when pedestrian starts and completes crossing  Time after green (WALK) when pedestrian enter the crosswalk  Presence of vehicles in the crosswalk  Vehicle volume  Pedestrian noncompliance (temporal) Read the entire page →
From page 290... ... 290 These research questions were combined into one activity because the research team felt that these questions could be answered using the same video data at specified locations. Justification Studies by the New York City DOT found that the current HCM pedestrian measure was too insensitive to changes in pedestrian volume or effective width. Read the entire page →
From page 291... ... 291 Table D8. Cost for High-Volume Pedestrian Facilities Study. Read the entire page →
From page 292... ... 292  Processing cost per 1 hour of video: $30 Table D9 shows the breakdown of costs for this research activity. Table D9. Read the entire page →
From page 293... ... 293  Pedestrian and vehicular volumes  Pedestrian compliance and selected crossing location Cost The following assumptions have been made in developing cost estimates:  Cost per camera: $200 (includes two 6-hour periods)  Hours of video to process: minimum of 12 hours  Processing time per 1 hour of video: 3 hours  Processing cost per 1 hour of video: $30 Table D10 shows the breakdown of costs for this research activity. Read the entire page →
From page 294... ... 294 Performance Measures During the post-processing of the video data, we propose to collect the following metrics:  Pedestrian volumes (sidewalk, in and out of the building, boarding and alighting, waiting)  Sidewalk width (actual, effective) Read the entire page →

From page 280...

... 280 Appendix D: Research Problem Statements Introduction This appendix provides a series of gap-filling research plans to support the development of reliable, valid, and replicable evaluations of pedestrian QOS, including both operational and satisfaction measures. These plans were originally prepared for consideration as research activities during Task 6 of NCHRP Project 1787, but were ultimately not selected.