Summary Results for: Roundabout Peer Review & Gap Project Evaluation Presented by: City Council: July 2, 2013Presenter: Scott Ritchie, P.E. RoundaboutsCorridorsSignals

Scott Ritchie, pe, roundabout specialist Agenda 1) What is A Modern Roundabout? 2) Why Are Roundabouts Safer? 3) Modern Roundabout Operations Visual 4) Rbt Peer Review Results / Recommendations 5) Open Discussion / Questions 6) Gap Project Evaluation Results / Recommendations 7) Open Discussion / Questions

Scott Ritchie, pe, roundabout specialist Study Area  Jackson   Maple  Pine  River   Bridge   Union  N. Main  North

Scott Ritchie, pe, roundabout specialist Evaluation Scope Review Existing Conditions + Site Visit Evaluate Union Signal Capacity Evaluate Ped Xings Provide Capacity & Safety Recommendations Provide Technical Memo of Results Present Results to Council

Scott Ritchie, pe, roundabout specialist Defined Scope  Jackson   Maple  Pine  River   Bridge   Union  N. Main  Mid-Block Ped Xing Controlled Ped Xing

Scott Ritchie, pe, roundabout specialist Jackson Crossing Modern Roundabout Relocated and incorporated into roundabout

Scott Ritchie, pe, roundabout specialist Defined Scope  Jackson   Maple  Pine  River   Bridge   Union  N. Main 

Scott Ritchie, pe, roundabout specialist Union Signal Capacity Unique Signal Ops: 1.E Leg One-way w/ Continuous WB RT (except Ped phase) 2.S Leg One-way (two receiving) 3.W Leg RT Only/No Lefts (No RTOR) 4.3 Approach Leg (Split Phasing) 5.Ped Only Phase (all red time) Evaluation: LOS F Evaluation: Deficient SB Capacity Resolution: Dual SB Thru Design Req’d

Scott Ritchie, pe, roundabout specialist Union Signal Capacity Evaluation: EB No RTOR = Less Cap Resolution: RTOR Not Warranted Remove it…

Scott Ritchie, pe, roundabout specialist Union Signal Capacity Evaluation: WB RT Constricted: Geometry, Parking, Driver Expectations, Ped phase, Xings, High RT Traffic, etc Resolution: Design Mods: Larger RT Rad, Channelize RT, Add Median, Landscape, Move Parking PP

Scott Ritchie, pe, roundabout specialist Union Signal Capacity Evaluation: Ped only phase = Less Cap Resolution: Remove Ped Phase, Relocate Xings, Refuge

Scott Ritchie, pe, roundabout specialist Union Signal Capacity Evaluation: Nearby Ped Xings Hinder Signal Ops = Less Cap Resolution: Merge Closely Spaced Xings (N & S of Signal) Resolution: Shorten Signal’s Cycle Length from 75s to 40s -- (New Xing Location Subject To Signal Timing) ?

Scott Ritchie, pe, roundabout specialist Union Signal Capacity Resolution: LOS A

Scott Ritchie, pe, roundabout specialist Maple Crossings Evaluation: - Xing Warranted? - Skew= Less Safety - Congestion - Distraction Resolution : - Check Warrants - Square Up Intx - Narrow MidB-Xing - +Bulb Out/Refuge - Reduce Parking - New Curbing

Scott Ritchie, pe, roundabout specialist Pine Crossings Evaluation: - Xing Warranted? - SSD w/ Bridge? - Xing Previously Relocated due SSD? - Excessive Xings - Congestion - Car Expectations Resolution: - Check Warrants - Check SSD - Not Met=Remove - Met=Relocate w/ Overxing or Underx

Scott Ritchie, pe, roundabout specialist River Crossings Evaluation: - 140’ Long Xing! - Skew = Less Safety - Lack of Sight Dist. Resolution: - Prohibit EB LT (ssd) - Geometric Mods Req’d (Pine & River) - One-Way River - 50’

Scott Ritchie, pe, roundabout specialist Bridge Crossing

Scott Ritchie, pe, roundabout specialist Peer Review Recommendations Don’t Allow the Gap Project To Simply Replace Extg Authorize New Design Concepts to be Developed for Each Intx / Xing –Jackson  Modern Roundabout –Maple  Square Up Intx, New Curbs, Bulbs, Refuges –Pine  Remove Xing?, Square Intx, + Curbs, New Xing –River  New Curbs, RT-Out only, New Xing –Bridge  Relocate –Union  2 SB Thru, WB RT Curbs, Lndscp, Xings, Time)

Scott Ritchie, pe, roundabout specialist Other Recommendations Gap Project Area – Confident in Recom. Union Signal Issues – Suspect Broader Network Issues Conduct a Planning Level Downtown Transportation Revitalization Study As a Visitor… other deficient issues in Downtown Area Need Analysis and Resolutions (all rdwys interconnected) RTE believes there are better solutions for downtown –Not Just for Traffic Capacity –Enhance Rochester Commerce, –All Mode Users (Peds, Cyclists, P, Trucks, Tourists, Commuters) –Improve Aesthetics, Landscaping, Street Furniture, Etc. –Create a “Sense of Place” –Future Land Use Planning –Accommodate Both Local Commuters and Local Businesses

Scott Ritchie, pe, roundabout specialist Questions? Speaker: Scott Ritchie Roundabouts & Traffic Engineering (928)