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Bicycle Boulevard / Neighborhood Greenway

LOC-BBG-12
Recommended Local

Bicycle Boulevard / Neighborhood Greenway

A Local street where traffic calming and diversion discourage through car traffic while prioritizing bicycle through-movement in the shared roadway.

Typical at: Compact Urban Core

Suburban is an edge case, thinning for the same reason as Continuous Sidewalk / Raised Junction: a disconnected, cul-de-sac-heavy grid gives it fewer parallel, low-traffic routes to use. Undeveloped and Rural are unlikely pairings.

#Illustration

Type: Paired. Format: Segment / cross-section (~2.8:1).

Typical condition
An ordinary Local street cross-section: unrestricted through car traffic, a cyclist taking the lane alongside car volumes, no diverters, no wayfinding.
Commonway recommendation
A modal diverter or traffic circle blocks car through-movement while a bicycle-width gap passes through; wayfinding signage marks the route; a calmed, low-volume, low-speed shared roadway.

Callouts

  1. (Physical) Modal diverter / traffic circle blocking through car movement; a bicycle-width gap allows continuous bicycle passage.
  2. (Physical) Wayfinding signage marking the route as a through bicycle connection.
  3. (Control-timing) At crossings of higher-volume streets, a signalized or protected crossing reduces bicyclist delay.1

No supplemental illustration needed.

#Speed and modal hierarchy

SPEEDLIMIT20
Follows the Local default: 20 mph hard maximum, no exceptions. A separate 85th/95th-percentile operating-speed threshold of 25 mph is used as a trigger for additional traffic calming, not as a substitute design speed.

#Design notes

Traffic calming and diverters discourage through car traffic while retaining local access, the reverse of a Collector-scale Bike Highway / Greenway's full physical separation. NACTO's guidance sets the design threshold where the treatment works: daily motor vehicle volume at or below 3,000 and a 95th-percentile speed at or below 25 mph, with heavier calming needed above those figures.1

A comparison of Berkeley's bicycle boulevards to their parallel arterials found bicyclist collision rates two to eight times lower on the boulevards.2

Bike Highway / Greenway (COL-BHG-04) — the Collector-scale pattern this one is explicitly distinguished from on that page: physical separation there, a shared, calmed roadway here.

Continuous Sidewalk / Raised Junction (INT-CSJ-06) — the Local-to-Collector intersection default, explicitly named alongside this pattern on that page as thinning in Suburban for the same grid-connectivity reason.

Modal Filter / Point Closure (ELM-MFP-44) — the Element pattern most frequently paired with this one to build the diversion shown above.

#Getting there: Retrofit path options

Parking-lane reallocation (RFT-CDR-05), Modal filtering / Low Traffic Neighborhood retrofit (RFT-NET-01, applies within this pattern rather than transforming it into something else)

#References

  1. Precedent-based National Association of City Transportation Officials, Urban Bikeway Design Guide, 3rd ed. (2025), "Bike Boulevards," in Designing Bikeways for All Ages and Abilities.(opens in new tab)
  2. Evidence-based Minikel, E., "Cyclist Safety on Bicycle Boulevards and Parallel Arterial Routes in Berkeley, California," Accident Analysis & Prevention 45 (2012): 241–247.(opens in new tab)

Suggest changes to this page (opens in new tab) Text-only version Last updated September 26, 2026