---
title: "Neighborhood Traffic Circle / Mini-Roundabout"
url: "https://commonwaysystem.org/patterns/elements/neighborhood-traffic-circle-mini-roundabout/"
id: "ELM-NTC-46"
description: "A small raised or landscaped island placed at the center of a Local-to-Local intersection, around which traffic circulates at low speed, used for calming rather than volume control."
updated: "2026-10-18"
---

ELM-NTC-46 Recommended

# Neighborhood Traffic Circle / Mini-Roundabout

A small raised or landscaped island placed at the center of a Local-to-Local intersection, around which traffic circulates at low speed, used for calming rather than volume control.

## Pattern viewer

Illustration in progress

No illustration of Neighborhood Traffic Circle / Mini-Roundabout has been made yet. Interactive views are planned for every pattern and Retrofit Strategy.

## Related Media

The items below come from outside the Commonway System, external videos, podcasts, and articles related to this page's topic, not part of the guidebook itself.

Aligned

### [Are Streets Too Complicated Now?](https://www.youtube.com/watch?v=u1Xs5EA5_uU)

City Beautiful

Asks whether today's proliferation of lines, signals, and lane types on streets is overcomplication or a needed response to modern demands, a question that runs directly through CS's Element-scale catalog and the density-tiered Corridor retrofit paths this video is tagged to.

MED-004

## Why this pattern exists

Roundabout (Single / Multi-Lane) is sized to the volume it carries and is the default control wherever two Collector-or-higher streets meet; it isn't built for, and doesn't document, the much smaller intervention appropriate at a Local-to-Local intersection. This pattern exists to cover that gap: an intersection too low-volume to need a sized, engineered roundabout, but where an uncontrolled or minimally-controlled crossing still benefits from a physical feature that forces drivers to slow and negotiate rather than proceed straight through at speed.[1][2]

## Key considerations

-   Sizing is deliberately minimal compared to Roundabout, matching Local street volumes and speeds rather than being engineered for Collector-or-higher throughput
-   Sightlines around the circle must remain clear for all approaches, since the reduced scale means less margin for landscaping or signage to obstruct a driver's view of crossing traffic
-   Emergency vehicle and larger-vehicle turning movements should be checked, since a mountable apron around the circle is often needed to accommodate a fire truck or moving van without requiring a larger footprint for every vehicle
-   This pattern doesn't replace right-of-way rules at the intersection; signage or markings should make clear whether existing stop or yield control still applies

## Related patterns

-   [Roundabout (Single/Multi-Lane)](https://commonwaysystem.org/patterns/intersections/roundabout.md) (INT-RAB-01) (the sized, higher-volume analogue governed by different rules)
-   [All-Way Stop](https://commonwaysystem.org/patterns/intersections/all-way-stop.md) (INT-AWS-04) (a control type this pattern sometimes replaces at a Local intersection)
-   [Vertical Speed Control](https://commonwaysystem.org/patterns/elements/vertical-speed-control.md) (ELM-VSC-06) (an alternative Local-to-Local calming treatment)

## References

1.  Precedent-based [Delaware Department of Transportation, _Traffic Calming Design Manual_, 2025 edition, Section 3D, "Neighborhood Traffic Circles & Mini-Roundabouts."](https://deldot.gov/Publications/manuals/traffic_calming/pdfs/Delaware_TrafficCalmingDesignManual.pdf)
2.  Precedent-based [City of Auburn, Alabama, Engineering Services, _Design and Construction Manual_, Appendix J, "Examples of Traffic Calming Measures."](https://static.auburnalabama.org/media/apps/www/engineering-services/publications/design-and-construction-manual/12-30-19-App-J_App-I-Removed_FINAL.pdf)