ADVANCED TRANSIT OPERATIONS AND MODELING

Transcription

1 SOUTHERN DISTRICT OF INSTITUTE OF TRANSPORTATION ENGINEERS (SDITE) 2017 ADVANCED TRANSIT OPERATIONS AND MODELING SURESH KARRE, PE, PTOE ROBERT DUBNICKA, PE, TE, PTOE

2 AGENDA Background Transit operations Geometric considerations Multimodal considerations Operational considerations Transit signal preemption Transit signal priority Success stories Durham-Orange LRT Pulse BRT Purple Line LRT

3 BACKGROUND

4 TRANSIT OPERATIONS

5 GEOMETRIC CONSIDERATIONS Exclusive & aerial alignment Limited/no impacts to other modes Curb-running alignment Side street impacts Mixed-traffic alignment Maximum impacts to other modes

6 MULTIMODAL CONSIDERATIONS

7 OPERATIONAL CONSIDERATIONS Traffic control devices Traffic signal operations At-grade crossing intersections Technology

8 TRAFFIC SIGNAL PREEMPTION Per the MUTCD, preemption is defined as the transfer of normal operation of a traffic control signal to a special control mode of operation

9 TRANSIT SIGNAL PRIORITY Per the MUTCD, priority control is defined as a means by which the assignment of right-of-way is obtained or modified

10 SUCCESS STORIES GoTriangle Durham-Orange LRT GRTC Pulse BRT MTA Purple Line LRT

11 GOTRIANGLE DURHAM-ORANGE (D-O) LRT

12 D-O LRT OVERVIEW Aerial, curb running, and mixed Varying LRT speeds 17 stations Several corridors Alternatives No Build Build C1/C1A Build C2 Build C2-A Transit Signal Preemption TSP locations

13 D-O LRT STAKEHOLDERS

14 D-O LRT TRAFFIC MODELING

15 D-O LRT PREEMPTION Traffic signal preemption All grade-crossing locations Railroad crossing gates VAP coding Basic logic Gate operations Check-In/Check-Out detectors locations Special considerations LRT through intersection LRT through proposed roundabout

16 D-O LRT MOE Roadway vs. LRT operations Network-wide outputs Avg. delay, stopped delay, # of stops Intersection outputs Movement/approach delay, LOS, queues Travel time outputs Per intersection/corridors

17 D-O LRT SUMMARY Detailed traffic analysis Environmental documentation VAP coding Alternatives evaluations Mitigation Stringent LOS criteria Multi-jurisdictional reviews

18 GRTC PULSE BRT

19 GRTC BRT OVERVIEW Median running, curb running, and mixed operations 3.2 miles dedicated bus-only lanes 14 stations 5 median; 9 curb-side 55 traffic signals Pedestrian emphasis Transit Signal Priority Most congested; Highest passenger boardings

20 GRTC BRT STAKEHOLDERS

21 GRTC BRT TRAFFIC MODELING

22 GRTC BRT TSP

23 GRTC BRT MOE Without vs. with TSP operations Network-wide outputs Avg. delay, stopped delay, # of stops Intersection outputs Movement/approach delay, LOS, queues Travel time outputs End-to-end corridor Without and with pedestrian recall [off-peak]

24 GRTC BRT DESIGN Design-Build compressed schedule 14 stations 55 traffic signal designs Maintenance of traffic Coordination with other projects

25 GRTC BRT SUMMARY Comprehensive evaluation of TSP Desired TT benefit Impact of pedestrian recall Design-Build Currently under construction Testing Aug-Oct 2017 Open in October

26 MTA PURPLE LINE LRT

27 PURPLE LINE OVERVIEW

28 PURPLE LINE OVERVIEW Links Four branches of Metro All three MARC lines Amtrak Regional/local bus

29 PURPLE LINE FEATURES Exclusive 7.1 miles Semi-exclusive 5.9 miles Mixed use 3.2 miles Ped/traffic conflicts 9.1 miles New bike lanes - 10 lane miles New/reconstructed signals in the path of the LRT New/reconstructed trails 6 miles New/reconstructed sidewalks 15 miles

30 PURPLE LINE TRAFFIC MODELING

31 PURPLE LINE STAKEHOLDERS Technical Working Group

32 PURPLE LINE TSP / PREEMPTION 55 signalized intersections Ridership is a function of: Headway Travel time Predictability/reliability Size the light rail vehicle fleet TSP and preemption considered to: Retain ridership Maintain a reliable headway Reduce light rail travel time Properly size the vehicle fleet

33 PURPLE LINE TSP / PREEMPTION

34 PURPLE LINE TSP / PREEMPTION 55 signalized intersections 14 intersections preemption Generally minor side street volumes minor impact to traffic operations 28 intersections TSP Green extension Early green 13 intersections no TSP or preemption Unacceptable traffic operations

35 PURPLE LINE MOE Roadway vs. LRT operations Network-wide outputs Avg. delay, stopped delay, # of stops Intersection outputs Movement/approach delay, LOS, queues Travel time outputs Per intersection/corridors TSP and preemption outputs Total # of calls, early/extend, avg. ext time

36 PURPLE LINE COMBINED MODEL

37 PURPLE LINE COMBINED MODEL

38 PURPLE LINE SUMMARY Detailed TSP / preemption analysis Location specific results Benefit of TSP/preemption Roadway vs. LRT analysis Station-to-station analysis Agency satisfaction Mode specific outputs helped to generate consensus Baseline for peak hour versus peak period standard Baseline standards for P3

39 CONTACT INFORMATION Suresh Karre, PE, PTOE Senior Traffic Engineer STV Incorporated 1400 I (Eye) Street, Suite 1100 Washington, DC (Direct) Suresh.karre@stvinc.com Robert Dubnicka, PE, TE, PTOE Senior Traffic Engineer STV Incorporated 140 Stoneridge Drive, Suite 450 Columbia, SC (Direct) Robert.dubnicka@stvinc.com

40 THANK YOU & QUESTIONS SOUTHERN DISTRICT OF INSTITUTE OF TRANSPORTATION ENGINEERS (SDITE) 2017 SURESH KARRE, PE, PTOE ROBERT DUBNICKA, PE, TE, PTOE