HomeMy WebLinkAboutBike Facilities and NetworkDifferent streets require different solutions to
create safe, comfortable, and convenient bicycling
conditions. Neighborhood streets with low speeds and
lighter traffic may only need shared lane markings
and wayfinding signs, while busier streets with higher
speeds may need buffered bike lanes or cycle tracks
to provide greater separation between bicyclists and
motor vehicles. The bicycle facilities listed here are
used to create the draft Iowa City Bicycle Network.
SHARED-USE PATHS / TRAILS / WIDE SIDEWALKS CYCLE TRACKS / SEPARATED BIKE LANES
CONVENTIONAL BIKE LANESBUFFERED BIKE LANES
SHARED LANE MARKINGS (SHARROWS)BICYCLE BOULEVARDS
SHOULDER BIKEWAY
SHARED ROADWAY
TWO-WAY ONE-WAY
BICYCLE BOULEVARDS ARE STREETS WITH LOW MOTORIZED TRAFFIC VOLUMES AND SPEEDS,
DESIGNATED AND DESIGNED TO GIVE BICYCLE TRAVEL PRIORITY. BICYCLE BOULEVARDS
USE SIGNS, PAVEMENT MARKINGS, AND SPEED AND VOLUME MANAGEMENT MEASURES
TO DISCOURAGE THROUGH TRIPS BY MOTOR VEHICLES AND CREATE SAFE, CONVENIENT
BICYCLE CROSSINGS OF BUSY ARTERIAL STREETS (NACTO).
A CYCLE TRACK IS AN EXCLUSIVE BIKE FACILITY THAT COMBINES THE USER EXPERIENCE
OF A SEPARATED PATH WITH THE ON-STREET INFRASTRUCTURE OF A CONVENTIONAL BIKE
LANE. A CYCLE TRACK IS PHYSICALLY SEPARATED FROM MOTOR TRAFFIC AND DISTINCT
FROM THE SIDEWALK (NACTO).
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FACILITIES
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Walk bikes zones
Existing Trails/Separated ROW
Proposed Trails/Separated ROW
Existing Sidepaths (Wide Sidewalks)
Proposed Sidepaths (Wide Sidewalks)
Cycle Track
Enhanced/Protected Bike Lanes
Bike Lanes on Existing Street Channel
Bike Lanes with Road Diet
Bike Facility Study Corridor
Bike Lanes with Major Reconstruction or New Corridors
Advisory Bike Lanes/Striped Parking + Shared Lanes
Long-Term Extensions
Bicycle Boulevards
Shared Connecting Routes
Infrastucture Types Applied to Network
The Infrastructure Types Map applies appropriate infrastructure solutions to
each of the street segments and routes displayed in the Bikeways Network. These
applications address such factors as available right-of-way or street width, possible
opportunities, needs or plans for future street construction or improvement, traffic
volumes, and surrounding environment. The infrastructure categories include:
Walk Bike Zones. These are auto-free zones that serve segments with high
pedestrian density such as the Downtown Pedestrian Mall. Bikes must be walked in
these areas.
Trails. Trails as indicated will be generally 10-foot wide paved facilities.
Some local trails may be reduced to 8-feet if space is limited, but this
reduction will only ordinarily apply to connector rather than principal trails.
Network Applications: Principal and Connector Trails
Sidepaths (Widened Sidewalks). Sidepaths will be generally 10-foot wide
paved facilities with limited area reductions to 8 feet where space is limited.
Design standards will address major issues such as intersections and driveway
crossing design and markings, signage, and minimum separation from curbs.
Network Applications: Sidepaths
Cycle tracks. Cycle tracks are one- or two-way on-street facilities separated from the
sidewalk by a curb and protected from moving traffic by parking lanes and a painted,
landscaped, or raised buffer. Applications in Iowa City are limited to Washington Street
downtown and a Burlington Street connection to Madison Street.
Network Applications: Principal On-Street Bikeways
Protected (or buffered) bike lanes. Protected bike lanes are separated from
moving traffic by a painted buffer area. Usually, parking remains along the curb.
Buffered bike lanes are proposed for the Market/Jefferson one-way pair.
Network Applications: Principal On-Street Bikeways
Bike lanes on existing street channel. These corridors will typically accommodate
conventional bike lanes within their existing curb-to- curb width. Most of these
corridors have minimum on-street parking. In some cases, parking may be limited to
one side of the street. Ideally, bike lanes should be provided in both directions, but in
some cases where parking must be retained, a single direction bike lane with a shared
lane in the opposite direction may be used.
Network Applications: Principal On-Street Bikeways
Bike Lanes with Road Diet. These corridors typically have four lanes, but can
accommodate bike lanes with a reduction from four to three lanes, using a two-way
center turn lane. Gilbert Street is identified as a Bike Facility Study Corridor – a street
with high demand by both motorists and bicyclists within a limited corridor.
Network Applications: Principal On-Street Bikeways
Bike Lanes with Major Reconstruction or New Corridor. These corridors
either require major street reconstruction to accommodate needed bike lanes or are
proposed streets that should provide bike lanes with their development. If possible,
protected bike lanes are preferable to conventional bike lanes.
Network Applications: Principal On-Street Bikeways
Advisory Bike Lanes. This category includes several options: striping parking lanes
that are not explicitly marked as a bike lane, used with or without shared lane markings
in the travel lane; or, on streets lacking space for exclusive bike lanes, indicating a
bicycle territory in a travel lane using a dashed line or contrasting pavement pattern
or color. Pilot projects for this application include Sandusky Street and Keokuk Street
north of Highway 6. Network Applications: Principal On-Street Bikeways
Bicycle Boulevards. Bicycle boulevards use minor infrastructure improvements
such as signs, pavement markings, and speed and volume management measures
to discourage through trips by motor vehicles and create safe, convenient bicycle
crossings of busy arterial streets. In the Iowa City network, they provide important
connections and alternatives to more heavily traveled trafficways.
Network Applications: Connector Bikeways
Shared Connecting Routes. These relatively short connecting routes require no
significant changes or infrastructure other than wayfinding signage.
Network Applications: Connector Bikeways
INFRASTRUCTURE TYPES
APPLIED TO THE NETWORK