Potential MUTCD Criteria for Selecting the Type of Control for Unsignalized Intersections (2015) / Chapter Skim
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Pages 100-107
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88 CHAPTER 7: OVERVIEW, CONCLUSIONS, AND RECOMMENDATIONS OVERVIEW As stated in the introduction of this report, the intent of this research study was to develop criteria and supporting material for the selection of appropriate right-of-way control at an unsignalized intersection, and for those criteria to be in a format that can be integrated into a future revision of the MUTCD. Within the context of this research, an unsignalized intersection is one where one of the following methods of right-of-way control is used on one or more of the approaches: No control: Right-of-way is based on the rules of the road where the first to arrive at the intersection has the right of way, and if two vehicles arrive at the same time, a driver yields to the vehicle to the right.
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89 unsignalized intersections, and previous literature that discussed methods for selecting traffic control at unsignalized pedestrian crossings. Key reference documents included the Highway Capacity Manual (23)
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90 Potential Criteria Table 49 summarizes potential criteria for AWSC as identified from the literature review, from the review of policies and guidelines, or as part of the economic analysis. Table 50 summarizes criteria identified from the reviews for no control, yield control, or minor-road stop control.
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91 Table 50. Potential Criteria for No Control, Yield Control, or Minor-Road Stop Control.
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92 CONCLUSIONS Caution Regarding Warrants As criteria were being identified, examined, and considered for inclusion in the proposed new MUTCD language, a caution regarding the term "warrant" was acknowledged. The criteria eventually selected for the MUTCD do not necessarily represent the minimum requirements for installing AWSC.
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93 2. The research results provide specific criteria for the selection of a specific type of unsignalized control, but these results do not provide an appreciation of the range of reasonable values -- a limitation frequently present within a decision-making process that is based on specific criteria.
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94 430 units/hr/major approach and 260 units/hr/minor approach. (The assumed hourly volume distribution is 7.8 percent for 3 hr and 6.1 percent for 5 hr.)
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95 Table 51. Recommended Criteria for Unsignalized Intersection Control.
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