跳至主要内容

Modeling Bicycle Conflict on Non-Motorized Paths on Suburban College Campuses

Bicycling is becoming more and more used as a way of commuting in a person’s average day. It is also a popular way for college students and faculty to get around on their campus, but it varies by the type and size of the community.

With a rise in bicycling on campuses there comes a rise in bicycle collisions with vehicles, pedestrians, and other bicycles. There has been extensive research studying bicycle and pedestrian crashes. However, most of this research involves crashes with vehicles which are more common. While some aspects of this research can be applied to non-motorized paths, there is a lack of research strictly focusing on only bicycles and pedestrians.

This study aimed to fill this knowledge gap by developing a model to identify locations on roads and paths (hotspots) on college campuses that are likely to have a bicycle collision and predict the likelihood of a serious bicycle crash on a non-motorized path based on the characteristics of the path. This study identified those interactions between bicyclists and pedestrians on non-motorized paths on a suburban college campus in Newark, USA.

Findings suggest that pedestrian density of a path is a major factor in the maximum speed bicyclists can achieve. The wider the path is, the higher the maximum speed is that a bicyclist can obtain. This is because a wider path width decreases the pedestrian density. The grade of the path has little effect on bicycle speeds. The results of the models were displayed on a GIS map that is visually appealing to a viewer. The paths were color coded based on their level of safety, so it is easy to observe problematic areas of the network.

In short, this technique can be applied to the entire campus network of non-motorized paths to study the whole system. This can then be used by planners and designers to identify areas that need upgrading and improve the overall safety of the non-motorized path system.


Article by Zachary Nerwinski, et al, from University of Delaware, Newark, DE, USA.

Full access: http://mrw.so/59GMox

评论

此博客中的热门博文

Identifying Sustainable Practices for Tapping and Sap Collection from Birch Trees

Tapping and collecting sap from birch trees ( Betula , sp.) for the production of beverages and syrup is gaining increased levels of interest. Although the practice of tapping birch trees and collecting sap has been ongoing for millennia across the world, there remain some critical data needed in order to make science-based decisions about the production practices required to optimize yields and ensure sustainable outcomes are achieved in the long-term. In this study, experiments were conducted to determine two pieces of information essential to identify practices necessary to ensure tapping trees for birch sap collection were both sustainable and profitable—the selection of the time to initiate tapping birch trees to obtain maximum yields, and the volume of nonconductive wood (NCW) associated with taphole wounds in birch trees. The yields obtained from various timing treatments varied between sapflow seasons, but indicated that using test tapholes to choose the appropriate ti

Incorporation of High-Altitude Balloon Experiment in High School Science Classrooms

High-altitude balloon is a balloon, filled usually with helium or hydrogen that ascends into an area called “near space” or stratosphere. The most common type of high-altitude balloons are weather balloons. Other purposes include use as a platform for experiments in the upper atmosphere. Modern balloons generally contain electronic equipment such as radio transmitters, cameras, or satellite navigation systems, such as GPS receivers. The mission of the High-Altitude Balloon Experiment (HABE) is to acquire supporting data, validate enabling technologies, and resolve critical acquisition, tracking, and pointing (ATP) and fire control issues in support of future space-based precision pointing experiments. The use of high-altitude balloons offers a relatively low-cost, low-vibration test platform, a recoverable and reusable payload, worldwide launch capability, and a 'near- space' emulation of the future space systems operational scenarios. More recently, several university

Esophageal Carcinogenesis

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50380#.VDy9v1fHRK0 Author(s)   Naoki Watanabe 1 , Masahito Shimizu 2 , Takahiro Kochi 2 , Yohei Shirakami 2 , Takuji Tanaka 1,3* Affiliation(s) 1 Department of Diagnostic Pathology (DDP) & Research Center of Diagnostic Pathology (RC-DiP), Gifu Municipal Hospital, Gifu, Japan . 2 Department of Internal Medicine/Gastroenterology, Gifu University Graduate School of Medicine, Gifu, Japan . 3 Department of Tumor Pathology, Gifu University Graduate School of Medicine, Gifu, Japan . ABSTRACT Esophageal cancer is the sixth leading cause of cancer death and remains one of the least survivable cancers. Esophageal cancers show wide variations in incidence in different pop