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Mr. Christopher Yuen May 23, 2001 - 01 A-252 Page 7 Vehicles turning left from the northbound Queen Kaahumanu Highway across the southbound traffic need an average gap of 4.1 seconds between southbound vehicles to start up and cross the two southbound lanes before the approaching southbound vehicle arrives at the crossing point. Since the right-turn vehicles need a longer gap in southbound traffic than the left- turn traffic, the right-turn vehicles would have to sit and wait a longer time than the left-turn vehicles for such a gap to occur, if the numbers of right- and left-turn vehicles were similar. In the morning peak hour, the forecast number of vehicles turning left into Kaiwi Street far exceeds the number turning right from Kaiwi Street. With the much higher volume, the left-turn traffic would use more of the available gaps and would wait longer on average to find a gap of sufficient length, as compared to the lower number of vehicles turning right. This results in a longer average delay for the left- turn vehicles in the morning peak hour than for the right turns. !n the afternoon peak hour, the forecast number of vehicles turning right is almost the same as the number turning left (with diversion of some right turns to Eho Street). With similar volumes and a much longer critical gap requirement, the right- turn vehicles must wait substantially longer than the left-turn vehicles, on average, to find a sufficient gap in the southbound through traffic on Queen Kaahumanu Highway to complete their turn. "We require the submittal and approval of construction plans for all work to be done within Queen Kaahumanu S-highway right-of-way." The applicant will comply. On behalf of QLT, we thank you for this opportunity to submit our comments in response to DOT's concerns. If you have any questions or comments, please do not hesitate to call either Jim Beli or myself at (808} 521-5361. Sincerely, BELT COLLINS HAWAII LTD. Gene Yong Senior Planner cc: Queen Liliuokalani Trust Department of Transportation WSA