Page 96


Demonstration F Pilot


Project Type: Curb Extension Sponsor Organization: Portsmouth Smart Growth for the 21st Century (PS21), West End Business Association Agencies Involved: City of Portsmouth Public Works, Police, and Fire Departments Materials Budget: $2,000 Key Materials: »» Surface Treatments: White striping using 4 in. white foil-backed traffic tape. Colored surface treatment using tempera paint. »» Barrier Elements: Orange traffic cones, and planters (wooden crates with plants inside) About the Project: Local Smart Growth organization PS21 hired Street Plans to lead the Islington Street Lab project. With the goal of engaging the community in brainstorming and creating a unique project in Portmouth’s West End, Street Plans worked with PS21, 20+ volunteers, and various city departments to install 6 crosswalks; 2 curb extensions; pop-up landscaping using over 3 dozen plants; sharrow markings; one parklet and bike corral; and striping to define three new on-street parking spaces. Following a successful demonstration, the City decided to move forward with a 30day pilot to test a number of the project’s elements and are working with PS21 to develop a city-citizen demonstration project policy. 96 · PROJECT APPLICATIONS

A generous curb extension reduces the turn radius and shortens the crossing distance by 20% (Street Plans).

Surface Treatments

4 in. foil-backed traffic tape defines the edge of the curb extension (spec sheet page 47). Tempera paint was used to further define the curb extension (spec sheet page 54).

Barrier Elements

Traffic cones and wooden crate planters were placed every 6 - 8 ft. to create a barrier and to further define the edge of the curb extension (spec sheet pages 28 and 36.

Tactical Urbanist's Guide to Materials and Design v.1.0  

The only materials and design guidance for Tactical Urbanist demonstration, pilot, and interim design projects. Funded by the James L. Knigh...

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