Mission Street Project Update Voyage 2070 Advance Operation Systems Using ASTRO Proactive Plan Selection Average and Split Variant operations Prepared By: Roger W. Boettcher ODOT Traffic Signal Control Specialist April 10, 2013

Presentation Outline Existing conditions HistoryGoals Project steps and installations Results and observations Conclusions

Key Concept for ASTRO Functions SVO uses the same cycle length and offset for the guest plans as that of the hosts. This means no transitions and results in a smooth re-allocation of cycle time to serve higher demand phases! This is a very important concept to note. No transition means the system stays in coordination even while making “on the fly adjustments” Voyage ASTRO reviews the V+ko data every 4 minutes and can make a plans selection every 5 minutes.

Existing Conditions Site History Inbound AM Outbound PM Problem intersec tion Problem Intersections Critical Intersection

Existing Conditions Site History Peak period travel times: 8 to 11 min. After installation of Voyage 2070 controllers travel times reduced to 4 to 4.5 minutes A reduction between 50-60%

The Project Originally conceived as a proof of product test facility for NWS Voyage Advanced Features firmware and as a 2070 controller training grounds 7 new 2070 controllers since January new 2070 controllers since January 2010

Goals Improve existing failed timing operations Resolve traffic flow issues at 3 major intersections: - 25 th Avenue - Airport / Turner Road - Hawthorne Avenue

Steps Step 1: replace 170 controllers and revise existing timing for 2070 operations Step 2: revise coordination offset reference to start of main street green Step 3: update Pedestrian and Red, Yellow clearance times to current standards

Step 1 Steps 1 through 3 yielded nearly 20% improvement - increased through put volumes - Reduced travel time delays for entire system

Step 2 Offset coordination reference points were adjusted to “Start of Main Street Green” These reductions are believed to be due to the inclusion of POM and the use of “Fast-way mode” for transition recovery

Step 3 Revise Pedestrian & Red and Yellow Clearance Times to current standards The use of “Fast way” transition seeking in 2070’s avoids dwell and transitions quicker than the 170’s Minor revisions were made to the red, yellow and pedestrian transition times bringing them to current standards

Step 4 Gather background Volume, occupancy, and MOE data Master System Detectors were determined for optimal flows

Step 4 Require free flow for operations Part of local system detection at intersections Determine control thresholds for PPS, PPA and SVO operations

Step 4 Free Flowing Volumes not easily found Three configurations were assessed The best fit

Step 4 Two inbound master system detectors Three outbound master system detectors Outbound flow   Inbound flow Best Fit Layout

Step 5 Generate basic ‘Host’ timing plans optimized using Synchro The plans library was populated with 16 ASTRO ‘host’ and ‘guest’ plans V+KO data resulted in appropriate TOD Operations

Step 5 V+KO: flow rate over a detector, adjusted for occupancy Volume + (K * Occupancy) Volume + (K * Occupancy)

Step 5

Step 6 Observe operations of host timing plans using standard TOD operations

Step 6

Step 7 Continue to collect background volume, occupancy and MOE data for analysis Capture fluctuations in the morning rush and make appropriate adjustments to the normal operational splits that the host plan is using The system responds nearly as quickly as the rise in the values and selects an appropriate plan Once the event passes the system makes a quick adjustment to the lower host plan and then to the low volume guest plan

Step 7 AM event captured and plan selection made by SVO operations AM 07:55

Step 8 Develop additional ‘Guest’ plans for SVO operations V+ko values for the morning operations have levels that will keep the system operational in host plan 8 until rise above host plan thresholds.

Step 9 Install and activate Guest plans (SVO & SVI) by TOD

Step 9 SVI on/ TOD Host P8 TOD Host P5 SVI off/ SVO on Host P12 TOD Host P15 SVO off/ PPA on TOD Free P9 P8 P7 P6 P4 P5 P13 P11 P12 P16 P14 P15 P2 Free P1 P8 P7 Inbound Heavy Triad Plans 7, 8 and 9 Outbound Heavy Triad Plans 14, 15 and 16

Step 10 Adjust activation thresholds for optimal operations PPS not currently active PPA 2 entries required SVO 16 entries required Master System Detectors 16 entries req’d.

Step 11 Activate PPA operations for shoulder times of day PPA allows extension of Plan coordination beyond TOD events and is operational on the shoulder times in the evenings and early morning after mid-night. 19:00 call to Free operations Free operations start here +/-

Step 12 Adjust guest plan splits for optimal performance - Currently fully activated using PPA and SVA - PPA is working 24/7 on shoulder times in the evenings and mornings after mid-night

Step 12 - Track the areas of concern based on the data provided by Voyage MOE logs - Use these measures to determine the extent of improvement gained by the adjustments

Step 12 Typical Monday on Mainline Mission Phase 2 (EB) no periods that could leave the phase early MOE Graph (Before)

Step 12 After PPA and SVO is operational we see a better use of the split times and a reduction in Mainline Max-out MOE Graph (After)

Step 12 After additional minor adjustments we see even better results MOE Graph (After)

Step 12 MOE Graph (Before)

Step 12 MOE Graph (After) After additional minor adjustments we see even better results

Step 12 The consequence of better service at a critical intersection may be seen MOE Graph (Before)

Step 12 We may see a bit of an increase in the delay at a less critical intersection that can absorb the additional queuing MOE Graph (After)

Step 13 Dynamic operations overlays to ASTRO features: - Auto-Max - Dynamic Phase Length - Dynamic Phase Reversal -Actuated Coordinated Operations - Coordinated Late Left Turn

Step 14 Traffic Responsive TransSuite Equivalent to PPA Operations Data

Conclusions Relatively easy process Very good results with any or all of these features PAA is probably the most useful out of the box feature SVO estimated 5 to 10 percent improvement for short term conditions Other features may be added as overlays These features may be installed with very little added cost to your systems

Terms and Definitions  Locations of Master System Detection is one of the primary steps to operations of Voyage Proactive Plan Selection and Split Variant Operations.  This step is critical in the development and will require some sound judgment and observations for accurate results.

Terms and Definitions  Advanced Features – All traffic adaptive operations within Voyage. Dynamic Phase Length (DPL) Dynamic Phase Length (DPL) Dynamic Phase Reversal (DPR) Dynamic Phase Reversal (DPR) Auto Max Auto Max Repeat Phase Service (RPS) Repeat Phase Service (RPS) Late Left Turn (LLT) Late Left Turn (LLT)

Terms and Definitions  Advanced Features – All traffic adaptive operations within Voyage. (cont.) ‘ASTRO’ Platoon Progression Platoon Progression Proactive Plan Selection (PPS) Proactive Plan Selection (PPS) Proactive Average Operation (PPA) Proactive Average Operation (PPA) Split Variant Operation (SVO) Split Variant Operation (SVO)

Terms and Definitions  Split Variant In-bound (SVI)  Split Variant Out-bound (SVO)  Host or Base plans (5, 8, 12, and 15)  Guest plans (4, 6, 7, 9, 11, 13, 14, and 16)  Border Plans (3 and 10)  Proactive Average Plans (0, 1 and 2)  Ped. Override Mode (POM)

Terms and Definitions Plans Library Guest Plans are located above and below Host plans as shown with 4,6,7,9,11,13,14, and 16 Host Plans are 5,8,12, and 15 Plans are grouped in Triads

Terms and Definitions Reference  Proactive Average Plans 0, 1 and 2.  Plan 0 = Free.  Border Crossing Plans 3 and 10.  V+Ko {volume + [K * % occupancy]} = {v+[40 * % occ]} = control threshold.  V+Ko in-bound or out-bound.

Terms and Definitions  The base plans or ‘Host’ plans serve as just that, hosts to their respective clones or ‘Guest’ plans.  Host plan 8 serves the morning heavy plan ‘Triad’ and has two ‘Guest’ plans. Plans 7 and 9 which are associated copies of the Host plan.

Terms and Definitions  SVO uses the same cycle length and off- set for the guest plans as that of the hosts.  This means no transitions between plans and a smooth re-allocation of cycle time to serve higher demand phases!