5.2. SR 07-24-2000 - Laserfiche WebLink

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DESIGN ELEMENTS OF SPEED CONTROLLED SUBDIVISIONS - Snrnmary of Strategies - Traffic Calming Effects of the Cost Comments Strategy Design Element Street Cross Section Can reduce typical street $100 per linear Savings come from larger - section to 29-feet and foot. buildable lots and less paved allow two-sided parking. Little cost surface area. The 32-foot street section savings for Suggest parkway strips to has same benefits with narrower prevent sidewalk parking. higher user acceptance, streets Street Alignment · Create curved streets with $100 per linear Benefit comes from better 350-foot radii seem to be a foot. visual impact. good compromise. Little change in Eliminates drivers more than Any curves help. cost for curved 10 MPH over the lin-fit. Straighter streets result in roadways. Straighter streets result in higher speeds higher speeds. Tight curves may complicate subdivision design. Traffic Chokers Benefit comes from No extra cost Does not affect adjacent lot narrower traffic lanes, for new design sizes. 20-foot width ideal for $2,500 for Requires no special residential streets, retrofit maintenance. Midblock locations are conditions Assists pedestrian effective but require movements. special site planning. Comer locations affect turning radii. Median Islands Benefit comes from $2,000 for typical Smaller medians often narrower traffic lanes, construction ($50 maintained by homeowners. 20-foot width needed with per sq ft) Larger medians require on-street parking, funded maintenance Midblock locations are program. effective but require Reduces adjacent lot sizes. special site planning. Can be integrated with other Comer locations affect design subdivision elements. turning radii. Block Length Has little impact upon $200,000 per Not a cost effective solution, travel speeds, street segment. May also reduce number of lots.