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Below is a list of reports and webpages that deal with bicycle lanes,
bicycle compatibility of roads and other design features for bicyclists
at crosswalks and intersections.
Documents and resources are provided as
PDF files (Adobe
Acrobat reader required),
HTML files,
CD ROMs and
Microsoft Excel files.
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A Comparative
Analysis of Bicycle Lanes Versus Wide Curb Lanes::
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Sponsor:
Federal Highway Administration
Summary:
The debate over
whether BLs (Bike Lanes) or WCLs (Wide Curve Lanes) are preferable
has been heated for many years and is not unlike the seat belts
versus air bags dichotomy that prevented a concerted approach to
the promotion of occupant restraints in the United States in the
1970s and 1980s. While both BLs and WCLs are acceptable facilities
in many locations, the debate has sometimes forced decision makers
to choose which facility type they prefer, to the exclusion of the
other. More bicycle facilities might be in place in this country
except for this long-standing division of opinion. Because of the
interest in BLs and WCLs, it was decided to make these facilities
the focus of this project, with an emphasis on operations and interactions
between bicyclists and motorists at intersections. experience, etc.,
of the bicyclists riding through these intersections.
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A secondary
study objective was to develop a guidebook of current innovative
bicycling activities, with a primary focus on intersection treatments
that pertained to BLs and WCLs. The innovative treatment �shopping
list� included advance stop bars (often called bike boxes) where
bicycles are allowed to proceed ahead of motor vehicle traffic at
an intersection; painting a modified version of the bicycle logo
near the curb in a WCL to alert drivers that bicycles would be operating
in this space; colored pavement designating the appropriate path
for the bicycle through an intersection; traffic calming measures
like diagonal diverters and speed humps with "slots" in the pavement
for bikes and buses; bicycle traffic signals; combination bus/bike
lanes; different techniques for separating bike lanes; and others.
The Bicycle Federation of America (BFA) was responsible for locating
the relevant examples and developing appropriate descriptions. This
guidebook is one of the final products of this contract.
Available Documents:
A
Comparative Analysis of Bicycle Lanes Versus Wide Curb Lanes: Final
Report (PDF format, 3,057k) - provides completed
report for viewing and printing.
A
Comparative Analysis of Bicycle Lanes Versus Wide Curb Lanes: Operational
and safety Findings and Countermeasure Recommendations (PDF format,
2,897k) - provides completed report for viewing and
printing.
A
Comparative Analysis of Bicycle Lanes Versus Wide Curb Lanes: Final
Report (HTML format) - provides completed report
for viewing and printing.
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Evaluation
of a Combined Bicycle Lane/Right Turn Lane in Eugene, Oregon:
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Sponsor:
Federal Highway Administration
Abstract:
In many bike-lane
retrofit projects, there is not enough space to mark a minimum 1.2-m
bike lane to the left of the right-turn lane. This report focuses
on a combined bicycle lane/right-turn lane used when right-of-way
at an intersection is limited. This evaluation took place in Eugene,
OR. The narrow right-turn lane described above was evaluated by
comparing the behaviors of bicyclists and motor vehicle drivers
at 13 th and Patterson (an intersection that had the shared, narrow
right-turn lane described above in place) with behaviors at 13 th
and Willamette (an intersection that had a standard-width (3.7-m)
right-turn lane and accompanying bike lane (pocket) to the left
of the right-turn lane). The intersection of 13 th and Willamette
is located about 0.8 km (� mi) to the west of 13 th and Patterson.
It is important to note that bicyclists approaching on 13 th at
Patterson Street proceed straight ahead to the bike pocket at the
intersection proper, in that the right-turn lane is �bulbed out.�
Bicyclists approaching on 13 th at Willamette have to shift to the
left to get in the bike pocket adjacent to the right-turn lane at
the intersection (i.e., there is no �bulb out�).
Bicyclists traveling through each intersection were videotaped.
The videotapes were coded to evaluate operational behaviors and
conflicts with motorists, other bicyclists, and pedestrians. More
than 17 percent of the surveyed bicyclists using the narrow-lane
intersection felt that it was safer than the comparison location
with a standard-width right-turn lane, and another 55 percent felt
that the narrow-lane site was no different safety-wise than the
standard-width location. This is probably a function not only of
relatively slow motor vehicle traffic speeds on 13 th Street, but
also due to the bike lane proceeding straight to the intersection
at the narrow-lane site such that motorists crossing to the right-turn
lane tended to have to yield. It was also relatively easy for bicyclists
to time their approach to the intersection and ride through on a
green indication. It was quite easy for bicyclists to ride up to
the narrow-lane intersection and position themselves beside passenger
cars or light trucks. Bicyclists at the narrow-lane site were �forced
into� the adjacent traffic lane on a few occasions, usually the
result of a heavy vehicle taking extra space. Sometimes bicyclists
would shift to the right-turn portion of the lane if a heavy vehicle
were in the through lane. Right turns on red by motor vehicles were
rarely prevented when bicyclists were present at the front of the
queue at the narrow-lane site. No conflicts between bicyclists and
motor vehicles, other bicyclists, or pedestrians took place at either
intersection. It is recommended that the design be implemented at
other types of intersection locations (i.e., different motor vehicle
approach speeds and approach configurations) and evaluated for effectiveness.s.
Available Document:
Evaluation
of a Combined Bicycle Lane/Right Turn Lane in Eugene, Oregon (PDF
format, 516 k) - provides completed report for viewing
and printing.
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Bicycle Compatibility
Index: A Level of Service Concept:  |
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Sponsor:
Federal Highway Administration
Summary:
Determining
how existing traffic operations and geometric conditions impact
a bicyclist's decision to use or not use a specific roadway is the
first step in determining the bicycle compatibility of the roadway.
This research effort was undertaken to develop a bicycle compatibility
index (BCI) methodology that can be used by practitioners to evaluate
the capability of specific roadways to accommodate both motorists
and bicyclists. The BCI methodology was developed for urban and
suburban roadway segments (midblock locations, excluding major intersections).
It incorporated variables that bicyclists typically use to assess
the "bicycle friendliness" of a roadway (such as curb lane width,
traffic volume, and vehicle speeds). The BCI methodology will allow
practitioners to evaluate existing facilities in order to determine
what improvements may be required. It can also be used to determine
the geometric and operational requirements for new facilities.
Available Documents:
Bicycle
Compatibility Index: A Level of Service Concept, Summary Report
(PDF format, 304 k) - provides completed report for
viewing and printing.
Bicycle
Compatibility Index: A Level of Service Concept, Final Report (HTML
format) - provides completed report for viewing.
Bicycle
Compatibility Index: A Level of Service Concept, Implementation
Manual (HTML format) - provides completed report
for viewing.
Bicycle Compatibility Index: Excel Workbooks
- provides worksheets for data entry and computations
in metric units or English units. To download, right click on preferred
link below and choose "save target as" if your browser
is Internet Explorer or "Save Link as" if you browser
is Netscape.
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Bicycle Safety
Resource Guide:  |
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Sponsors:
National Highway Traffic safety Administration, Federal Highway
Administration
Summary:
The Bicycle
Safety Resource Guide was prepared for the bicycle safety professional
and others who are proactive in developing programs at the state
or community level. It provides a compilation of existing and proposed
countermeasures that can be used by a variety of implementers to
help solve a wide range of bicycle safety problems.
Available Resource:
Bicycle
Safety Resource Guide - is available. Please send a request
for a copy of the interactive CD with your contact information to:
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Guide for
the Development of Bicycle Facilities (published by AASHTO):
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Sponsor:
American Association of State Highway and Transportation Officials
Summary:
This guide, published by the American Association of State Highway
and Transportation Officials (AASHTO), provides guidance on planning
and designing bicycle facilities. Chapter 1 identifies different
types of users and facilities, and gives factors to consider when
selecting facility types and locations. Chapter 2 contains design
guidelines for various types of bicycle facilities: shared roadways,
signed shared roadways, bike lanes, and shared use paths. Chapter
3 briefly discusses operation and maintenance. The Appendix describes
the legal status of bicycles according to the Uniform Vehicle Code.
Available Document:
To
order a copy of this Guide, contact AASHTO:
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