Merge analysis for the passenger vehicles from the Park and Ride Lot to the I-75 southbound on-ramp was also conducted for the future Build conditions. Merge/diverge analyses were performed for the I-75 on- and off-ramps for the No-Build and Build Alternatives. A new signal timing plan was developed to address the new intersection configuration and new travel pattern. The Build Alternative includes the proposed Park and Ride Lot and a new two-way south leg at the southbound off-ramp interchange terminus intersection to provide access to the Park and Ride Lot. Also, the left-most westbound through lane is converted to a westbound left-turn lane at the intersection of Royal Palm Boulevard and Weston Road. Specifically, a third right-turn lane is added on the southbound off-ramp. The No-Build Alternative includes the improvement recommended by the I-75 System Interchange Modification Report (SIMR) approved by FDOT in 2011. Operational and safety analyses were performed for two alternatives: the No-Build and Build Alternatives. The majority of the crashes were rear-end and sideswipe crashes. There was a total of 31 crashes on I-75 southbound on/off-ramps during the same period. The crash analysis indicated that there were 257 crashes at Royal Palm Boulevard and Weston Road during the five year period. The crash data were obtained from the FDOT Crash Analysis Reporting System database and Signal Four Analytics. The intersection of Royal Palm Boulevard and I-75 southbound off-ramp is operating at LOS D or better during AM peak hour, PM peak hour, and off-peak hours.Ĭrash analysis was performed using the five-year data from 2011 to 2015, the most current data are available at the time when the analysis was conducted. The intersection of Royal Palm Boulevard and Weston Road is operating at level of service (LOS) F during AM peak and off-peak hours, and LOS E during both PM peak and offpeak hours. Based on the operational analysis of existing conditions, all the I-75 ramps are operating at LOS D or better. The traffic impact of the Park and Ride Lot was evaluated for AM peak hour (8:00AM-9:00AM), PM Peak hour (5:00PM-6:00PM), and off-peak hours (7:00AM-8:00AM and 4:00PM-5:00PM). The operational analysis for this study was performed using the Highway Capacity Software (HCS) Version 7.7 (based on HCM 2000, HCM 2010 and HCM 6th Edition methodologies where appropriate) and Synchro Version 10. The analysis years for this study include Existing Year 2018, Opening Year 2020, and Design Year 2040. SERPM 7.071 is calibrated to base year 2010 conditions and includes a horizon year of 2040. The traffic projections in the IOAR were developed using existing field traffic counts and the latest version of South East Regional Planning Model (SERPM) 7.071. The MLOU was approved by the Florida Department of Transportation (FDOT) District 4 Interchange Review Coordinator (IRC) in August 2018. The proposed Park and Ride Lot will be located in the southwest quadrant of the interchange adjacent to the I-75 southbound on-ramp and will provide access to planned I-75 Express Bus services.Ī Methodology Letter of Understanding (MLOU) was prepared to outline the methodology for the analysis and evaluation of this Interchange Operational Analysis Report (IOAR). The purpose of this study is to evaluate the traffic impact of a proposed Park and Ride Lot on the interchange of I-75 at Royal Palm Boulevard.
0 Comments
Leave a Reply. |