Transportation System Plan 2018-2038

Table G-11 Signaliz ed Intersections Requiring Mitigation w ith Each LOS Strategy Needs Mitigation w ith 1 Hour Standar d Needs Mitigation w ith 2nd Hour Standar d Location LOS LOS D LOS E LOS LOS D Number of Congested Intersections (1) Downtown M edford 4th at Central (1) A Yes Yes A Yes 4th at Riverside F Yes Yes E Yes State Highway Intersections Highw ay 99 at South Stage E Yes No (3) C No (3) Highw ay 62 at Poplar/Bullock F Yes Yes D Yes Highw ay 62 at Hw y 99/Hw y 238 E Yes No (3) D No (3) Highw ay 62 at Delta Waters F Yes Yes F Yes Highw ay 62 at Vilas E Yes No (3) D No (3) Highw ay 238 at Sage F Yes Yes E Yes South of Jackson Street Barnett at Black Oak E Yes No D No Barnett at N. Phoenix E Yes No D No Highland at Siskiyou F Yes Yes E Yes Hillcrest at N. Phoenix F Yes Yes F Yes Jackson at Crater Lake F Yes Yes F Yes Main at Columbus F Yes Yes E Yes Main at Ross F Yes Yes E Yes North of Jackson Street Biddle at McAndrew s E Yes No E Yes Crater Lake at Delta Waters F Yes Yes F Yes Congested intersections (2) 17 17 17 Intersections that w ould be fix ed to meet alternative LOS standard 17 11 11 Intersections that w ould be degraded from today’s 1-hour LOS D standard that w ould not be fix ed None 6 5 Note: LOS means level of service. Analy sis results are based on the identified alter native LOS standard. PM peak hour (1 hour) LOS D column r epresents the ex isting standard. (1) Simulation show s that the permitted left-turn phase on the w estbound approach is not adequately served thus causing extended queues that block upstream intersections. It is assumed that an exclusive left-turn lane w ould be provided on this approach under all LOS standards considered. (2) Based on today ’s LOS D st andard that reflects the public’s current ex pectations about acceptable levels of delay . (3) Mitigation conclusions in this tabl e are based strictly on LOS. Based on ODOT ’s v/c standards for state highw ays these intersections w ould require mitigation. The City of Medford asked that all intersections that are predicted to exceed a v/c ratio of 1.00 be considered for im provem ent even if the level of service is shown to be D or better. The analy sis software used to predict level of service only considers ope ration over two signal cy cles. When the v/c ratio exceeds 1.00, generally queues will continue to grow for m ore than two cy cles. Table G-12 shows locations where the 2023 v/c ratio is expected to exceed 1.00 for both the peak and second-highest-hour G-20