Photo by John Williams

NCBW Newsroom - The Research Beat

The National & International Scene | Regional and Local Actions | The Research Beat | Resources | Jobs, Grants & RFPs

PED SAFETY AUDIT USING GOOGLE STREET VIEW
-> Human Environment Digest reported a recent study published in Epidemiology analyzed the use of Google Street View as a pedestrian safety audit tool. (Development and Validation of a Google Street View Pedestrian Safety Audit Tool: https://bit.ly/3azqC47) Researchers developed a 38-item virtual audit instrument to examine pedestrian injury risk at intersections near 26 schools in New York City by integrating Computer Assisted Neighborhood Visual Assessment System (CANVAS) with Google Street View imagery. They found that built environment features of intersections relevant to pedestrian safety can be reliably measured using a virtual audit protocol implemented via CANVAS and Google Street View. https://bit.ly/3azxNsV

PEDESTRIAN SAFETY AND MULTIMODAL PERCEPTION
-> Transportation Research Part F: Traffic Psychology and Behaviour published a paper in which researchers recognized few studies have specifically focused on examining the unique strengths and weaknesses of vision and audition in the pedestrian task. They posited future pedestrian safety research should give more detailed consideration to the perceptual modalities involved in the pedestrian task. They considered a multimodal approach to pedestrian safety research comprising 2 broad principles drawn from the perceptual modality literature: independence and dominance and discussed how each may inform pedestrian safety research as well as injury prevention efforts. The Intersection of Pedestrian Safety and Multimodal Perception: https://bit.ly/3dQEXeD

PATHOGENIC BACTERIA ON SHARED BICYCLES
-> An International Journal of Hygiene and Environmental Health article noted shared bicycles offer the potential to be sources for interindividual bacterial community transfer. (Occurrence of Potentially Pathogenic Bacteria on Shared Bicycles: https://bit.ly/2xEM8FU) However, the overall ecology of the bacterial community persisting on the shared bicycles was still unknown. Researchers profiled bacterial communities from shared bicycle handles and saddles in 5 locations in Chengdu, China. They found profiles of bacterial communities on shared bicycles, and suggest that potentially pathogenic bacteria may impair human health through shared bicycles, especially in susceptible individuals. Notably, this investigation will prompt the public to pay more attention to the management of bicycle sharing programs worldwide, and it also provides research basis for the government to formulate corresponding public health policies.

FIRST & LAST MILE BICYCLING TO TRANSIT & EQUITY
-> Cities published a study that created a quantity-based method to measure pedestrian- and bicycle-transit accessibility on the basis of which impacts of bicycling and walking on transit accessibility are estimated and compared. (First-and-Last Mile Solution via Bicycling to Improving Transit Accessibility and Advancing Transportation Equity: https://bit.ly/3bI3twk) Researchers also investigated the benefit of bicycling the first-and-last mile to transportation equity among social groups defined by income and race. The case study of Hamilton County, OH demonstrates that the transit access distance by bicycling is tripled compared with that by walking. The extended access distance increases the transit job accessibility by 43.70%. Moreover, it advances transit equity, which is reflected in an upgraded transit accessibility to jobs for low incomes and minorities.

EMERGING DATA FOR PED & CYCLIST MONITORING
-> The State Smart Transportation Initiative reported on a recently published Transportation Research Interdisciplinary Perspectives paper that discusses the top sources for individually-acquired pedestrian and bicycle travel data, assimilated from a variety of sources. (Emerging Data for Pedestrian and Bicycle Monitoring: Sources and Applications: https://bit.ly/3bGyvET) This could help us understand how to solve the complexities of incorporating active transportation modes into traditional planning practices. Although, there are many platforms and companies offering bike-ped travel data acquired through smartphone apps, location-based services, fitness apps, etc., the choice can be very confusing and at times expensive.

ESTIMATING PED VOLUME USING STREET VIEW IMAGES
-> Computers, Environment and Urban Systems published a study that conducted a large-scale validation test by comparing pedestrian volume extracted from Street View images (SVIs) with the results from field observations for more than 700 street segments in Tianjin, China. (Estimating Pedestrian Volume Using Street View Images: A Large-Scale Validation Test: https://bit.ly/2JwoY7y) Researchers found that using SVIs with machine learning techniques is a promising method for estimating pedestrian volumes with a large geographic reach. Automated pedestrian volume detection could achieve reasonable or good levels of accuracy.

BICYCLISTS SERVICE QUALITY AT SIGNALIZED INTERSECTIONS
-> A Journal of Transport & Health article proposed efficient bicycle level of service (BLOS) models denoting bicyclists' perceived level of satisfaction for the assessment of signalized intersections under heterogeneous traffic conditions. (Service Quality Analysis of Signalized Intersections from the Perspective of Bicycling: https://bit.ly/2USVdmr) Extensive data were collected from 70 well-diversified intersection approaches in India. All approaches are also rated by 200 on-site bicyclists based on their perceived satisfaction levels on a Likert scale. Researchers found the important measures of BLOS improvement at signalized intersections include the efficient management of crossing pedestrians, restrictions on nearby parking activities, and minimization of bicycle delay.