Guide for the Analysis of Multimodal Corridor Access Management (2018) / Chapter Skim
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Pages 44-49
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44 Description A left-turn lane is typically an auxiliary lane in the middle of a two-way roadway. Left-turn deceleration lanes allow left-turning vehicles from the roadway to conduct most of their deceleration and, if necessary, queue and wait for a safe gap in opposing traffic before turning.
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Left-Turn Lanes 45 Access Management Technique Performance Trends and Documented Performance Relationships Operations Safety Install left-turn deceleration lanes where none exists. ↑ ↓ ↓ ↑ ↑ ↑ ↓ ↓ ↑ Install alternating left-turn lane.
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46 Guide for the Analysis of Multimodal Corridor Access Management Total Major Street Through Lanes Speed Limit (mph) Major Street Volume (vehicles per hour per lane)
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Left-Turn Lanes 47 need to be added to this storage length when determining the total left-turn lane length. NCHRP Report 745 (3)
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48 Guide for the Analysis of Multimodal Corridor Access Management pedestrian link LOS score by 0.03 points (at 20 mph) to 0.08 points (at 50 mph)
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Left-Turn Lanes 49 2. Highway Capacity Manual: A Guide for Multimodal Mobility Analysis, 6th ed.
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