BARRIER ELEMENTS: POSTS + CYLINDERS
TRAFFIC CONES Typical Dimensions: Varied. Standard traffic cones are 36 in. or 48 in. high. Estimated Cost: $22 / unit. May be able to be available for loan from the city or traffic control provider.
Free-standing delineators - see page 27 protect children cycling (Connect Whitefish).
Flexible delineator - see page 28 - at the North Minneapolis Greenway pilot project (Carrie Christensen).
F Demo (1 day - 1 month) Pilot (1 month - 1 year)
Interim (1 - 5 years)
Recommended Applications and Installation ɖBikeways: ɖ Place along edge of bike lane every 8 - 20 ft. to create barrier, depending on the thoroughfare’s design speed / bikeway configuration.
SFMTA’s low-cost materials create a curb extension (Aaron Bialick, StreetsBlogSF).
ɖMedian ɖ Islands: Place approximately 2 - 3 ft. apart to demarcate median area. Provide a minimum 6 ft. break for crosswalk/pedestrian accessibility. Calgary uses plastic delineators to create an interim design bike lane (City of Calgary).
As part of the Vision Zero initiative, LADOT uses simple materials like striping, k-71 delineators (see page 31), and surface colorization (see 53 - 57) as an interim measure to tighten intersections, slowing turning vehicles and improving safety for people walking (LADOT/ Jim Simmons).
28 · MATERIALS PALETTE · Barrier Elements
ɖCurb ɖ Extensions/Plazas: Place along edge of plaza or curb extension, approximately 1 post every 8 - 10 ft. ɖRoundabouts: ɖ May be placed every 2 - 3 ft. around the circumference to demarcate roundabout area, in conjunction with signs and other visual elements. Tips and Considerations »» Re-usable, and easy to source but only appropriate for very short-term projects. »» Easily knocked down — require monitoring when used as barrier element. »» Opt for reflective cones for use during the evening or overnight. »» Decorate cones with flowers, pinwheels, paint etc. to make your project more unique. Potential Sources »» Borrow from city public works or transportation department »» Buy / rent from traffic control equipment suppliers or construction companies.
The only materials and design guidance for Tactical Urbanist demonstration, pilot, and interim design projects. Funded by the James L. Knigh...