Convertible Roadways and Lanes (2004) / Chapter Skim
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Pages 17-22
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From page 17... ...
5 CHAPTER TWO BACKGROUND For approximately 75 years, many different forms of reversible roadways have been used throughout the world to address a variety of needs. The three principal uses have been to accommodate the demand associated with frequent and predictable unbalanced peak-period travel times, infrequent planned events of varying duration, and emergency conditions such as evacuations.
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6 TABLE 1 REVERSIBLE FLOW FACILITIES AS REPORTED BY SURVEY RESPONDENTS Location Highway Name Facility Type Reversible Segment Length (miles)
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7 TABLE 1 (Continued) Location H 3 35 36 37 38 39 40 41 4 43 44 43 44 45 FIGURE 1 General configuration of reversible lane facilities (Lathrop 1972)
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8 have been discontinued because the capacity of the down- highest potential f stream terminus was less than that of the reversible segment. The result was a slow buildup of congestion within the segment that diminished or eliminated the anticipated benefit from the additional lane.
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9 operations may be adjusted at any time to better match regional goals." Included are reversible lanes as well as other types of special-use and priority facilities, such as HOV lanes, transit lanes, and toll lanes. Managed lanes can be used to restrict access to certain nes at different times of the day, and they can involve "value i eversible Operations and Facilities ange of applications nd operations.
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10 Major-Flow and Minor-Flow Directions "Major" and "minor" directions of flow are terms freuently associated with reversible lane operations. The mather Terms practice showed the use of veral other terms similar to contraflow that are and have s of unconventional lane use onfigurations that may or may not be reversible.
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