Design Guidance for Freeway Mainline Ramp Terminals (2012) / Chapter Skim
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Pages 115-118
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From page 115... ...
115 This section provides the conclusions and proposals based upon the findings of this research. General conclusions are first provided related to the design of both entrance and exit ramps.
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From page 116... ...
116 full length of the ramp and SCL for acceleration when gaps are abundant and merging is not difficult. • Constrained-merge conditions appear to be the most difficult for drivers, as reaching freeway speeds becomes more critical since gaps are smaller and do not provide as much opportunity for accelerating in the freeway lane.
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From page 117... ...
117 at a greater rate, than drivers exiting on straight ramps. This may be due to the visual perceptions of drivers as they approach the horizontal curvature of a loop ramp.
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From page 118... ...
118 than a horizontal curve. Also within the exhibit, replace "Speed reached" with "Diverge speed." • Modify Green Book Exhibits 10-70 and 10-73 to be more consistent in format.
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