Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges (2021) / Chapter Skim
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Pages 137-160
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7-1 7.1 Introduction The Restricted Crossing U-Turn (RCUT) intersection, also called a reduced conflict intersection (RCI)
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From page 138... ...
7-2 Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges vehicular safety benefits with this RCUT intersection. Sometimes, a stop-controlled RCUT intersection is later converted to a signalized RCUT intersection if traffic volumes increase.
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Restricted Crossing U-Turn (RCUT) Intersections 7-3 cycle length in both directions of the major street or a different cycle length for each direction of the major street.
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7-4 Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges communicate crossing patterns in nonvisual ways, using wayfinding techniques discussed in the PROWAG (2)
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Restricted Crossing U-Turn (RCUT) Intersections 7-5 Despite the common application of the "Z" crossing, RCUT intersections can be served with pedestrian crossings that are more direct and reduce both geometric and operational pedestrian delay.
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7-6 Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges The third option, using the U-turn crossover, introduces a substantial safety challenge for bicyclists, because the path to the U-turn crosses that of through motorists. The U-turn itself may be difficult for bicyclists, because motorists making U-turns may have difficulty staying in lanes, and large vehicles may produce greater off-tracking into lanes occupied by bicyclists.
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Restricted Crossing U-Turn (RCUT) Intersections 7-7 pedestrians to cross the major street directly or to cross from the center diagonal island to one of the alternate quadrants.
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7-8 Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges In consideration of these challenges and pedestrian conflict points, Exhibit 7-9 presents the design flags applicable to pedestrians, along with the location of their discussion and applicable treatments (design flags and treatments whose discussion applies across alternative intersection types are in Chapter 5)
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Restricted Crossing U-Turn (RCUT) Intersections 7-9 7.3.3 Bicycles–Key Safety Challenges At RCUTs, bicycles may travel on shared-use path systems along with pedestrians, travel on a dedicated separated bicycle facility, or operate in a shared environment with vehicles.
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7-10 Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges 7.4.1 RCUT Bike Lane and Path Concept This RCUT concept (shown in Exhibit 7-11) is distinguished by its provision of on-street bike lanes along with a shared-use path.
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Restricted Crossing U-Turn (RCUT) Intersections 7-11 • Indirect Paths design flag: For bicyclists, the design includes on-street bike lanes with ramps to shared-use paths.
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7-12 Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges Exhibit 7-13. RCUT shared-use path concept.
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Restricted Crossing U-Turn (RCUT) Intersections 7-13 locations with either relatively high motor vehicle volumes or high speeds.
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7-14 Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges 7.4.3 RCUT Separated Bike Lane Concept The RCUT separated bike lane concept (shown in Exhibit 7-15) is distinguished by the separated bike lane and the removal of the major street left-turns.
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Restricted Crossing U-Turn (RCUT) Intersections 7-15 design feasible only with low volumes of left-turns or with left-turn operations as an explicit tradeoff of the design.
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7-16 Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges 7.4.4 Rural RCUT Concept with Biking on Shoulder The rural RCUT concept (shown in Exhibit 7-17) is presented with a distinctly different lane configuration and context from the other three concepts.
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Restricted Crossing U-Turn (RCUT) Intersections 7-17 cross the median.
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7-18 Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges maneuvers. Minor street medians should be at least 6 feet wide.
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Restricted Crossing U-Turn (RCUT) Intersections 7-19 minor street to continue directly into the storage bay for the U-turn crossover.
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7-20 Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges 7.5.2 Traffic Control Devices 7.5.2.1 Pedestrian Signals Pedestrian signals at an RCUT intersection should be installed to accommodate a two-stage crossing, even if it is possible to make both major street crossings in a single stage. This is because pedestrians who are slower or faster than the design value for walking speed may get caught in the median with a red signal.
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Restricted Crossing U-Turn (RCUT) Intersections 7-21 pedestrian signals to be installed with minimal effect on vehicular travel time.
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7-22 Guide for Pedestrian and Bicyclist Safety at Alternative and Other Intersections and Interchanges 7.5.4 Channeling Pedestrians to Crossing Wayfinding signing (and other wayfinding devices for the visually impaired) can help direct pedestrians through the intersection to their desired destinations.
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Restricted Crossing U-Turn (RCUT) Intersections 7-23 7.6 References 1.
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