Laserfiche WebLink
Santa Ana - Garden Grove Streetcar Project <br />Traffic Study Addendum <br />Table 3-6 Intersection PM Peak Hour Queuing Summary - <br />Fairview Street Grade Crossing <br />Note: Queue length reported in feet. <br />As shown in Tables 3-5 and 3-6, addition of the at -grade crossing at Fairview Street between Civic Center Drive and <br />5th Street would reduce, on average, both the average and maximum queue lengths. During the AM peak hour, the <br />at -grade crossing would reduce the average and maximum queue lengths at Civic Center Drive and 5th Street by 4 <br />feet and 32 feet, respectively. Similarly, during the PM peak hour, the at -grade crossing would reduce the average <br />and maximum queue lengths at Civic Center Drive and 5th Street by four 14 and 49 feet, respectively. The most <br />significant reductions in queue lengths were observed to occur at the north bound through movement at Fairview <br />Street/Civic Center Drive and the south bound approach at Fairview Street/51h Street. During gate -down events, the <br />at -grade crossing would essentially serve as a queue -cutting signal, allowing north bound and south bound vehicles <br />to clear at the upstream and downstream intersections. <br />3.4 Traffic Signal Priority Impact Analysis <br />3.4.1 Intersection HCM Analysis <br />A level of service analysis was conducted using the HCM methodology to compare conditions with and without <br />transit signal priority. In the Synchro traffic software, which utilizes HCM methodology, signal timing was adjusted <br />to reflect the following: <br />® 13 <br />f�� <br />No Build PM <br />Build PM <br />Average <br />Max <br />Average <br />Max <br />Lane <br />Queue <br />Queue <br />Queue <br />Queue <br />Length <br />Length <br />Length <br />Length <br />Delt <br />1 Civic Center & Fairview North Bound Left <br />0.6 <br />22.3 <br />0.1 <br />20.2 <br />-0.5 <br />-2.1 <br />1 Civic Center & Fairview North Bound Thru <br />174.3 <br />736.1 <br />54.6 <br />323.6 <br />-119.7 <br />-412.4 <br />1 Civic Center & Fairview East Bound Thru <br />69.6 <br />311.5 <br />69.3 <br />321.7 <br />-0.3 <br />10.3 <br />1 Civic Center & Fairview East Bound Right <br />1.4 <br />71.3 <br />1.0 <br />56.3 <br />-0.4 <br />-15.0 <br />1 Civic Center & Fairview South Bound Left <br />67.2 <br />319.8 <br />83.1 <br />337.9 <br />15.8 <br />18.0 <br />1 Civic Center & Fairview South Bound Thru <br />50.6 <br />336.3 <br />61.8 <br />388.6 <br />11.2 <br />52.4 <br />1 Civic Center & Fairview West Bound <br />0.3 <br />29.4 <br />1.3 <br />37.0 <br />0.9 <br />7.6 <br />2 5th & Fairview North Bound Left <br />86.6 <br />491.1 <br />219.2 <br />557.7 <br />132.5 <br />66.6 <br />2 5th & Fairview North Bound Thru <br />128.0 <br />566.4 <br />148.0 <br />578.4 <br />20.1 <br />12.0 <br />2 5th & Fairview East Bound Left <br />51.2 <br />357.1 <br />55.6 <br />484.8 <br />4.4 <br />127.7 <br />2 5th & Fairview East Bound Thru <br />345.1 <br />568.8 <br />279.6 <br />567.4 <br />-65.5 <br />-1.4 <br />2 5th & Fairview South Bound Left <br />94.6 <br />848.6 <br />62.6 <br />483.4 <br />-32.0 <br />-365.3 <br />2 5th & Fairview South Bound Thru <br />401.5 <br />1055.5 <br />169.9 <br />699.8 <br />-231.6 <br />-355.7 <br />2 5th & Fairview West Bound Left <br />63.9 <br />328.4 <br />94.8 <br />397.8 <br />30.9 <br />69.4 <br />2 5th & Fairview West Bound Thru <br />74.1 <br />328.5 <br />95.3 <br />386.3 <br />21.1 <br />57.8 <br />3 Fairview Grade Crossing North Bound Left <br />- <br />- <br />0.0 <br />0.0 <br />0.0 <br />0.0 <br />3 Fairview Grade Crossing North Bound <br />- <br />- <br />38.0 <br />579.4 <br />38.0 <br />1 <br />579.4 <br />3 Fairview Grade Crossing South Bound <br />- <br />- <br />24.0 <br />312.4 <br />24.0 <br />312.4 <br />Note: Queue length reported in feet. <br />As shown in Tables 3-5 and 3-6, addition of the at -grade crossing at Fairview Street between Civic Center Drive and <br />5th Street would reduce, on average, both the average and maximum queue lengths. During the AM peak hour, the <br />at -grade crossing would reduce the average and maximum queue lengths at Civic Center Drive and 5th Street by 4 <br />feet and 32 feet, respectively. Similarly, during the PM peak hour, the at -grade crossing would reduce the average <br />and maximum queue lengths at Civic Center Drive and 5th Street by four 14 and 49 feet, respectively. The most <br />significant reductions in queue lengths were observed to occur at the north bound through movement at Fairview <br />Street/Civic Center Drive and the south bound approach at Fairview Street/51h Street. During gate -down events, the <br />at -grade crossing would essentially serve as a queue -cutting signal, allowing north bound and south bound vehicles <br />to clear at the upstream and downstream intersections. <br />3.4 Traffic Signal Priority Impact Analysis <br />3.4.1 Intersection HCM Analysis <br />A level of service analysis was conducted using the HCM methodology to compare conditions with and without <br />transit signal priority. In the Synchro traffic software, which utilizes HCM methodology, signal timing was adjusted <br />to reflect the following: <br />® 13 <br />f�� <br />