Application of Dynamic Lane-Use Control: Proposed Practices (2022) / Chapter Skim
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22 State of the Practice Applications of Dynamic Lane-Use Control for Freeway ATM This chapter presents the state of the practice on DLUC signals for freeway ATM applications as directed by the panel. For this current project, researchers used the following categories of ATM operations.
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State of the Practice 23 Source: TTI, K Fitzpatrick, June 2014.
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24 Application of Dynamic Lane-Use Control: Proposed Practices of tunnels where there are only two directional lanes. These lane-use controls were found only in bridge and tunnel applications.
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State of the Practice 25 Long-standing experience has resulted in regional and national consistencies of practice. Some aspects appear to be consistent within the European Union, such as pictograms applied within overhead lane-controls and side-mounted dynamic message sign panels.
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26 Application of Dynamic Lane-Use Control: Proposed Practices arrow means that the lane is closed ahead, and traffic should move to the next lane on the left. A red X means that the lane is closed to traffic facing the signal (25)
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State of the Practice 27 As reported by Finley et al. in an unpublished FHWA report (13)
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28 Application of Dynamic Lane-Use Control: Proposed Practices Minneapolis/St. Paul Lane-use control signals have been used in this region for over 50 years on I-94 in advance of the Lowry Hill tunnel in downtown Minneapolis.
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Source: TTI, K Fitzpatrick Figure 20.
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30 Application of Dynamic Lane-Use Control: Proposed Practices Route 29 in Gainesville. As part of the project, the roadway was divided into five segments, with each segment outfitted with specific combinations of ATM strategies and technologies.
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State of the Practice 31 Nevada DOT (NDOT) initiative included improving traffic flow and safety through the use of dynamic lane management, queue warning, and speed harmonization (variable speed limits)
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32 Application of Dynamic Lane-Use Control: Proposed Practices arrow display (two arrows on one display) will be used only if one or more of the middle lanes are closed that still offer a left- or right-lane merge option.
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State of the Practice 33 Source: Google Maps Figure 24. Westbound I-90 and Touhy Avenue.
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34 Application of Dynamic Lane-Use Control: Proposed Practices West of Denver along I-70, a unique project involving lane controls on a $72 million dynamic shoulder lane was implemented by CDOT in December 2015. To meet high weekend seasonal demand, a tolled express lane was established by restriping to create a travel lane on the left shoulder.
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State of the Practice 35 GDOT had intended to use an upward diagonal yellow arrow as a transition phase between green and red when the lane was about to close. The upward diagonal yellow arrow was proposed because it fits with the principles of an exit guide-sign design in the MUTCD.
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36 Application of Dynamic Lane-Use Control: Proposed Practices Source: TTI, Jason Crawford. Figure 29.
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State of the Practice 37 Similarly, NDOT installed their DLUC system early in their I-15 Project Neon construction project; however, their system was permanent. Travel lanes were reconfigured throughout the construction project in Las Vegas, then continued to serve traffic management needs afterward.
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