Street Types
Last update: 5/5/11
Intent
It is the intent of this section to establish a hierarchy of street types in
accordance with roadway typologies adopted as part of the Transportation
Element of the Comprehensive Plan. Each street type creates the framework
for a different urban form.
Applicability
Development that is required to introduce streets in accordance with the block
structure standards […] shall do so in accordance with these standards and
Table […] Permitted Street Types, except where a variation is specifically
authorized as part of a Planned Unit Development or as approved by the
Planning and Zoning Board pursuant to [Section…] of the Subdivision
Regulations. Front and street side building setbacks and other dimensional
requirements may vary depending on the street type in accordance with the
building-lot standards.
Street Types Established
Public and private streets are classified according to the following types.
SYMBOL
Type I
Type II
Type III-S
Type III-U
Type III-A
Type III-B
Type III-C
Local
TITLE
Arterial
Arterial/Collector
Minor Arterial/Collector- Suburban
Minor Arterial/Collector- Urban Core
Main Street
Community Street
Suburban Canopy
Local Street
Figure [Street Types Map], graphically depicts how each existing street or
roadway is classified.
Street Type Descriptions
Type I: Arterial
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Description:
Designed to move through traffic, including freight.
Provides high-capacity connections between urban areas and major
activity centers.
Typical design speed: 45 mph or greater.
Typical facilities: Typically four to six lanes with shoulders, wide
landscaped medians, separate bike and pedestrian systems, and
controlled access.
Typical transit services: Premium - Bus Rapid Transit, Express Bus,
Service Enhancements (Reduced Headways, Special Service Hours, etc.),
Regular Fixed-Route Bus.
Notes: Access management important to preserve capacity. Bus pullouts important to support transit.
Type II: Arterial/Collector
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Description: Provides connections between activity centers and
neighborhoods. Development is typically placed away from the street and
driveways are semi-controlled.
Typical design speed: Between 35 mph and 55 mph
Typical facilities: Typically four lanes (existing or planned) with
sidewalks, bike lanes, and wide landscaped medians.
Typical transit services: Express Bus, Service Enhancements, Regular
Fixed-Route Bus.
Type III: Minor Arterial/Collector
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Description: Provides connections between neighborhoods and access to
adjoining properties. Designed to encourage transit use and enhance
pedestrian circulation. In the urban core, roadway capacity is
constrained and buildings are placed close to the street. In suburban
areas, these roadways are typically two lanes wide with a mix of
residential and non-residential uses. Suburban non-residential uses
typically contain a small area or single aisle of parking between the
principal building and street instead of on-street parking.
Typical design speed: Between 30 mph and 45 mph.
Typical facilities: Typically two to four lanes (existing or planned) with
sidewalks, bike lanes, planting strips and frequent bus stops. On-street
parking is possible in the urban core.
Typical transit services: Regular Fixed-Route Bus.
Type III-A: Main Streets
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Description: Designed to provide service downtown or in highly walkable
mixed use centers. Designed with focus on pedestrian circulation and
comfort. Buildings are placed close to the street; parking is on-street or
placed at the back of the building and roadway capacity is constrained.
Typical design speed: Approximately 30 mph.
Typical facilities: Typically two travel lanes, wide sidewalks, extensive
amenities, closely spaced bus stops, and pedestrian level lighting.
Typical transit services: Regular Fixed-Route, Circulator Service.
Type III-B: Community Streets
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Description: Provides connections between lakes, community centers
and parks. These streets should accommodate all modes of
transportation.
Typical design speed: Between 30 mph and 40 mph.
Typical facilities: Typically on-street parking (with the urban core only),
wide sidewalks, pedestrian crossings/refuge islands, bike lanes,
significant canopy landscaping and other amenities supportive of transit.
Typical transit services: Varies.
Suburban Canopy Roads
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Description: Designed to protect tree canopy within right-of-way and
preserve the character of roadways located within suburban or rural
areas that are subject to development pressure. Widening is prohibited
beyond operational and safety improvements and may involve parallel
corridors to accommodate travel demand.
Typical design speed: Varies.
Typical facilities: Typically two lanes with or without sidewalks.
Typical transit services: Varies.
Local Streets
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Description: Primarily neighborhood streets intended to provide the
highest accessibility to local land uses, with special emphasis on
bicycle/pedestrian movements.
Typical design speed: Between 20 mph and 30 mph.
Typical facilities: Minimum roadway width 20-feet with on-street parking
allowed if managed to allow one open lane of travel at any given point for
emergency and service vehicle access.
Typical transit services: Bicycle/pedestrian connections to transit
services.
Street Type Typical Cross Sections
Tables […] through […] illustrate typical cross sections for each street type.