COM 0649.004 2002-2004 - Laserfiche WebLink

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D. EVALUATION METHODOLOGY The evaluation of the four way stop at the Nani Kailua Drive/Kakalina Street intersection was done in three parts. The first part evaluated the eight criteria set forth in the MUTCD to determine whether or not the four way stop control is warranted. The second part evaluated the effectiveness of the four way stop control as a traffic calming device in reducing traffic speeds on Nani Kailua Drive. The third part describes discussion of the impacts of the four way stop control with members of the Kona Traffic Safety Committee. This section describes the methodology used for each evaluation process. D.1 Criteria for Four Way Stops The evaluation procedures used to evaluate the four primary and four optional criteria listed in the MUTCD to determine whether or not the four way stop control is warranted are discussed. Criterion A. Traffic Control Signals Justified. This first criterion is a warrant for traffic control signals. If a traffic control signal is justified at this location, then a four way stop is also warranted. The MUTCD lists eight warrants for determining the need for traffic control signals. The first two warrants pertain to traffic volumes and were considered applicable to this study. Warrant 1, the eight hour vehicular volume warrant, has two parts. Condition A, the minimum vehicular volume warrant, is "intended for application where a large volume of intersecting traffic is the principal reason to consider installing a traffic control signal." Traffic control signals could be considered if hourly vehicular volumes exceed the following standards for each of any eight hours of an average day: o Major street- 500 vph total on both approaches, o Minor street- 150 vph on only the high volume approach for the same eight hours. 1.1