COM 0400.053 2002-2004 - Laserfiche WebLink

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Pclcific, ~t1c. 100 Pauahi Street, Suite 212 Hi10,. HI 96720-3046 MEMORANDUM: R~r: ~d9.t161-2776 Fax: 808-935-5934 www. m-e.com TO: Sidney Fuke FROM: Harold Sugiyama ~j DATE: March 8, 2004 SUBJECT: Clifto's LLC Project -Traffic Study We have the following response to Christopher Yuen's letter of February 4, 2004. We have analyzed signalized intersections rather than highway operations for two reasons. First, traffic signals have a more adverse impact on highway operations that just traffic volumes and become the constraining point along the roadway. Second, the highway analysis assumes that there are no traffic signals along the analysis route. Also, the levels of service for signalized intersections are not necessarily comparable with the highway level of service since they represent different concepts of operations. The levels of service for signalized intersections aze based on average delay while the levels of service for two lane highway operations are based on the percent time spent following other vehicles and average travel speeds. Level of service D for a Class 1 two lane highway like Queen Kaahumanu Highway is defined as percent time following of 65- 80%and average travel speeds of 40 to 45 miles per hour. The average speed at level of service D is still considered to be desirable. The computer program used to analyze level of service for signalized intersections assumes that there is no traffic backup from the adjacent intersections or other highway operations. At the time of our traffic counts in October 2002, there were no traffic backups from either of the two study intersections (Hina Lani Drive and Kaiminani Drive) into the other. Also, there was no traffic queue from Kailua town. Therefore, the signalized intersection level of service analysis was appropriate to use and the results matched the traffic operations that were observed. We calculated the two lane highway level of service using the existing traffic volumes shown in our report. We calculated level of service D for both morning and afternoon peak hours, which coincides with the referenced study's assessment. Again, as noted above, level of service D implies average speeds of 40 to 45 miles per hour that should be considered desirable. Am A E C O M Comvarvr'