An assessment of existing bicycle advisory pavement marking on urban roads

Bicycle advisory treatments are used to advise road users of the potential presence of cyclists and of the location where cyclists may be expected to ride on a road. They include pavement markings, warning signs, guide signs, and as such have no regulatory function. The most common type of bicycle advisory pavement markings is the shared lane marking. Other forms of bicycle advisory pavement marking have also been trialled and used in several local jurisdictions. The bicycle awareness zone is an example of such facility which has been trialled and used in southeast Queensland, Australia since the late 1990s. A bicycle awareness zone is similar to shared lane marking in principle but differs in the type of logo and, in some cases, location of its placement on the road. This study assesses the operational and safety issues at three bicycle awareness zone sites by analysing video-assisted observation data collected in 2011 by Queensland Department of Transport and Main Roads, Australia. Of the several applications of bicycle awareness zones, this study only covers a particular application where the centre of the bicycle symbol is placed exactly over the parking edge line. Unlike previous studies, which mostly covered before-and-after evaluations of bicycle advisory pavement markings, the focus of this study is to assess whether the placement of bicycle awareness zone symbols has been successful. The aggregated results from video-assisted observational data show that the cyclists did not always track themselves over the centre of the symbols. Rather, both the cyclists' lateral tracking positions and road user interactions varied with the widths of kerbside parallel parking space. Since the bicycle awareness zone symbols are not positioned on the cyclists' desired line of ride on some roads, their operational effectiveness and safety value are questioned.

The effect of right-turn-on-red on pedestrian and bicycle accidents. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

A comparative analysis of bicycle lanes versus wide curb lanes: final report.

Federal Highway Administration, Office of Safety and Traffic Operations, Washington, D.C.

Investigation of motor vehicle/bicycle collision parameters, volume I. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Investigation of motor vehicle/bicycle collision parameters, volume II, appendices. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

A Comparative analysis of bicycle lanes versus wide curb lanes : final report /

"October 1999."

Evaluation of safety, design, and operation of shared-use paths : final report /

"HRDS-06/07-07(500)E"--Back cover.

Motorized bicycle (moped). Findings of a survey.

Mode of access: Internet.

A study of bicycle/motor-vehicle accidents: identification of problem types and countermeasure approaches. Volume 1--text. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

A study of bicycle/motor-vehicle accidents: identification of problem types and countermeasure approaches. Volume 2--appendices A-D. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

A study of bicycle/motor-vehicle accidents: identification of problem types and countermeasure approaches. Volume 3--appendices E-G. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Bicycle/pedestrian trip generation workshop : summary /

"March 1998."

Bicycle rules enforcement program, Skokie, Illinois /

On cover: Illinois traffic safety programs, report of evaluation or assessment.

Network Development with Bicycle Lanes

Bicycling as an active mode of transport can offer great individual and societal benefits. Allocating space for bicycle facilities is the key to promoting cycling as bicyclists perceive better safety and convenience in separate bikeways. In this thesis, a method is proposed for optimizing the selection and scheduling of capacity enhancements in road networks while also optimizing the allocation of road space to bicycle lanes. The goal is to determine what fraction of the available space should be allocated to bicycles, as the network evolves, in order to minimize the present value of the total cost of the system cost. The allocation method is combined with a genetic algorithm to select and schedule road expansion projects under certain budget constraints.