2009-034 (2) - Final Supplemental Environmental Impact Report for Fairhaven/Lincoln

Home Browse Search

S. Environmental Analysis TRAFFIC AND CIRCULATION Table 5.3-5 Peak-Hour Intersection Level of Service { airhaven Uncoln Closed) Train Delay and Hazard Index Existing grade crossing blockage time and delay were analyzed for three grade crossings within the study area. E cisting delay calculations assume four trains per hour during each of the morning and evening peak - h periods: traveling at 45 miles per hour based on current Amtrak and Metrol ink Schedules. Freight trains do not operate during the vehicle traffic peak -hour periods. Tables 5.3-6 and 5.3-7 show the delay conditions and blockage time at the study area intersections during the peals -hour periods, with the Fairhaven /Lincoln intersection open (two -war traffic) and closed' respectively. The highest delay occurs at the 17th Street crossing. With the Fairhaven /Lincoln intersection open, vehicles at the 17th Street grade crossing are 88 delayed approximately 1 seconds in the morning and 23 seconds In the evening peak -Dour periods. With the intersection closed, vehicles at the 17th Street grade crossing are delayed 20 seconds in the morning and 26 seconds in the evening peals -hour periods. The grade crossing delays increase as the volume of traffic increases because more time is required for the q ueue of traffic waiting at the crossing to start -up and clear the crossing. Table 5.3-6 P a -Hoar Grade Crossing Delays Fa it a nlUn In Open) Total Blockage Time Per AM Peak Flour PM Peak Flour Intersection Peek Flour minutes LOS sendeile LOS 7.04 Lincoln at Santa Clara' 15 B 12.4 8 10.7 Lincoln at 17th street 7.06 A 0.405 B 0.614 North Grand at Fairhaven D 0.790 A 0.501 North Grand at Santa Clara D 0.606 B 0.608 North Grand at 17Th Street D 0.622 D 0.875 Source: D1J1 Harris 2008 Note: Analysis uses ICU methodology except where noted. ' HCM 2000 methodology was used to determine the average vehicle delay for unsignalired intersections, Moil is displa ed in seconds instead of V /C. Train Delay and Hazard Index Existing grade crossing blockage time and delay were analyzed for three grade crossings within the study area. E cisting delay calculations assume four trains per hour during each of the morning and evening peak - h periods: traveling at 45 miles per hour based on current Amtrak and Metrol ink Schedules. Freight trains do not operate during the vehicle traffic peak -hour periods. Tables 5.3-6 and 5.3-7 show the delay conditions and blockage time at the study area intersections during the peals -hour periods, with the Fairhaven /Lincoln intersection open (two -war traffic) and closed' respectively. The highest delay occurs at the 17th Street crossing. With the Fairhaven /Lincoln intersection open, vehicles at the 17th Street grade crossing are 88 delayed approximately 1 seconds in the morning and 23 seconds In the evening peak -Dour periods. With the intersection closed, vehicles at the 17th Street grade crossing are delayed 20 seconds in the morning and 26 seconds in the evening peals -hour periods. The grade crossing delays increase as the volume of traffic increases because more time is required for the q ueue of traffic waiting at the crossing to start -up and clear the crossing. Table 5.3-6 P a -Hoar Grade Crossing Delays Fa it a nlUn In Open) FairhavenlLincoln andSanta ClaralLincoln Intersection Modificationx City of Santa A na a ''age 53 - 7 Supplement to the Santa Ana ,Second Main Tack Project EIR Resolution No. 2009 -034 Page 85 of 130 Total Blockage Time Per AN Peek -Flour Delay PAS Peak -Hour Delay Crossing Peek Flour minutes ecorrvfrr "le sendeile Fairhaven Avenue 7.04 16 15 Santa Clara Avenue 7.04 12 10 1 7th Street 7.06 21 23 Source: DMJM Harris 2008 FairhavenlLincoln andSanta ClaralLincoln Intersection Modificationx City of Santa A na a ''age 53 - 7 Supplement to the Santa Ana ,Second Main Tack Project EIR Resolution No. 2009 -034 Page 85 of 130