Bike Lane Treatments: Intersection Treatments

This paper presents an analysis of the perceived level of comfort of current and potential bicyclists from 277 survey respondents who rated 26 first-person video clips of a bicyclist riding through mixing zones, lateral shifts, bend-in, bend-out, and protected intersection designs. Full-text can be downloaded on ODOT computers.

This study builds on the success of New York City’s protected bicycle lanes (PBLs) through improving the understanding and impacts of different intersection designs. Full-text can be downloaded from ODOT computers.

This report presents an analysis of the perceived level of comfort of current and potential bicyclists from 277 survey respondents who rated 26 first-person video clips of a bicyclist riding through mixing zones, lateral shifts, bend-in, bend-out and protected intersection designs.

This study aims to develop a warning system for drivers to avoid vehicle–bicycle crashes in the bike lane area under a connected vehicle environment. Full-text can be downloaded on ODOT computers.

This study evaluated the effects of two bike boxes and two turn boxes installed in 2014 at an intersection in Charlottesville, Virginia.

This paper utilizes a framework for expanding upon limited data to make a comparative bicycle safety analysis of bicycle infrastructure treatments. This study compares intersections with bike-boxes, bicycle through lanes, green painted bicycle through lanes, sharrows, and without treatments in the City of Cambridge, Massachusetts. Will need to be requested.

This research investigated the effectiveness of two bicycle crash countermeasures with bicycle signal treatments at urban signalized intersections. These two countermeasures are the bike boxes and the protected intersections.

This study evaluated the effects of two bike boxes and two turn boxes installed in 2014 at an intersection in Charlottesville, Virginia.

The City of Portland and many other agencies provide pavement markings such as the MUTCD standard 9C-7 bicycle detector marking to help people using bicycles call for a green indication at a signalized intersection. Previous research has shown that approximately half of cyclists do not intuitively understand the marking, and therefore may not be detected by the traffic signal necessitating running the red indication. Can be provided by the ODOT Library.

The increased use of cycle tracks has led to investigations of how to accommodate them at intersections. Although the protected intersection concept shows promise based on its Dutch legacy, engineers, planners and advocates lack sufficient information to confidently implement the concept in an American context.

This paper presents a comparison of five designs for protected bike lanes at intersections without bicycle signals. Paper can be downloaded from ODOT computers.

Bicycle signals can be used at intersections to control the movement of bicycles when geometric or operational conditions dictate that their movements be separated in time for safety or other reasons.

This study aims to develop a warning system for drivers to avoid vehicle–bicycle crashes in the bike lane area under a connected vehicle environment. Paper can be downloaded from ODOT computers.

The aim of this paper is to develop an approach that helps cyclists to meet their cycling preferences (regarding, e.g., the energy they use and their preference to avoid unnecessary stopping) while crossing intersections. Paper can be downloaded from ODOT computers.

This study analyzed the operational impacts of traditional concurrent phasing, leading bike intervals (LBI), split leading bike intervals, and exclusive bike phasing in a microsimulation environment, and explored the safety impacts of traditional concurrent phasing, leading bike intervals, split leading bike intervals, and mixing zones using video-based conflict analysis.

This research investigated the effectiveness of two bicycle crash countermeasures with bicycle signal treatments at urban signalized intersections.

This paper summarizes the investigation into coordinating traffic signal times along the Dunsmuir Street corridor in downtown Vancouver (Canada) for the benefit of cyclists. Can be provided by ODOT Library

This research documents the operational benefits of additional phases, barrier bars, and a call-based transit priority signal-phasing strategy over a more traditional eight-phase, two-barrier preemption-based transit signal–phasing strategy. Can be downloaded from ODOT computers.

The objective of this work is to investigate the safety effects of cycle tracks at signalized intersections using a case–control study. Can be supplied by ODOT Library.

This paper outlines the development of a two way cycle track along a one-way road with multiple signalized intersection. Can be provided by ODOT Library.

This paper describes a numerical method for determining crossing delay that applies to crossings of any number of stages and multiple WALK intervals per cycle. It also covers diagonal two-stage crossings and bicycle two-stage left turns, a common way of providing for cyclist turns in Europe that American cities are beginning to adopt. Can be provided by the ODOT Library.

This research explores a phasing scheme in which right turns have their own phase and bike and pedestrian crossings run in their own distinct phase concurrent with the parallel vehicular through phase. Can be downloaded from ODOT computers.

There is a set of cost-effective techniques that can be applied at signalized intersections to significantly improve bicycle comfort, efficiency, and safety. Bicyclists'’ unique characteristics, including slower acceleration and operating speeds than motor vehicles, often require specific adjustments to signal design. Would need to be requested.

This study evaluated the effects of two bike boxes and two turn boxes installed in 2014 at an intersection in Charlottesville, Virginia. Would need to be requested.

This paper presents a methodology to evaluate the effectiveness of a bicycle treatment (bike boxes) at intersections using a before-after surrogate safety analysis based on longitudinal video-data analysis. Can be provided by ODOT Library.

This report presents a before-after study of bike boxes at 10 signalized intersections in Portland, Oregon.

This study evaluates bike boxes installed in the City of Minneapolis in 2009 to partially satisfy the requirements of a FHWA Request to Experiment.

This article reviews bike boxes that were installed in Portland, OR, allowing cyclists to move to front of queue at traffic signals. Would need to be requested.

An innovative "bike box"--a right-angle extension to a bike lane (BL) at the head of the intersection--was installed with accompanying traffic signs but no extra traffic signals at a busy downtown intersection featuring two one-way streets in Eugene, Oregon, in summer 1998. Cyclists traveling through the intersection were videotaped before and after placement of the box. The videotapes were coded to evaluate operational behaviors and conflicts with motorists, other bicyclists, and pedestrians. Can be downloaded from ODOT computers.