Convertible Roadways and Lanes (2004) / Chapter Skim
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Pages 69-72
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From page 69... ...
57 CHAPTER SEVEN CONCLUSIONS The synthesis review of reversible roadway practice demonstrates several points relative to its use over the last 75 years. Historically, the goal of reversible roadway segments, to adapt the direction of flow in one or more lanes to meet the directional capacity needs during periods of high and unbalanced directional travel demand, has remained unchanged.
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From page 70... ...
58 tance comes in part because they believe that the reversible operations may be confusing to drivers not familiar with this type of operation and that the agencies will require additional staffing to manage and enforce the operations. Although there have not been many analyses of the safety effect of reversible operations, a body of empirical evidence gained from past experience has shown that, to the contrary, drivers adapt to them readily.
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From page 71... ...
59 such as freeways, control systems were much more complex. Reversible freeway lane systems required barrier separation between lanes, gates at entry and exit points, and variable message signs.
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From page 72... ...
60 • • • • • • • in combination with their safety impact and to determine the level of congestion that would indicate the most effective use of contraflow. Officials at the South Carolina Department of Transportation suggested an assessment on the issues of safety where guardrail and bridge ends are not protected in the reversed direction.
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