High Level Bridge ITS Concept of Operations (ConOps) Interstate 95 Bridge over the Piscataqua River (High Level Bridge) ITS Concept of Operations (ConOps) PREPARED FOR State of New Hampshire Department of Transportation (NHDOT) Bureau of Transportation Systems Management and Operations (TSMO) IN COOPERATION WITH State of Maine Department of Transportation (MaineDOT) Maine Turnpike Authority (MTA) PREPARED BY 2 Bedford Farms Drive Suite 200 Bedford, NH 03110 603-391-3900 November 17, 2020 High Level Bridge ITS Concept of Operations (ConOps) Table of Contents 1 Scope and Background.............................................................................................. 1 1.1 Purpose .......................................................................................................................................... 1 1.2 Background .................................................................................................................................. 2 1.3 Problem Statement ................................................................................................................... 2 1.4 Document Overview ................................................................................................................. 3 1.5 Intended Audience .................................................................................................................... 3 2 Operational Needs ..................................................................................................... 5 2.1 Stakeholders ................................................................................................................................ 5 2.2 Operational Needs Overview ................................................................................................ 6 2.3 Data Collection and Monitoring .......................................................................................... 6 2.4 Roadway and Roadside Elements ....................................................................................... 8 2.5 Information Messaging and Dissemination .................................................................. 11 2.6 Communications ...................................................................................................................... 13 2.7 Processes and Procedures .................................................................................................... 13 3 System Overview .....................................................................................................16 3.1 Relationship to Existing Systems ....................................................................................... 16 3.2 Owners and Operators .......................................................................................................... 16 3.3 Part-Time Shoulder Use (PTSU) System .......................................................................... 17 3.4 Integration .................................................................................................................................. 20 4 System Operations and Support ............................................................................22 4.1 Operational Needs Summary .............................................................................................. 22 4.2 Software ....................................................................................................................................... 31 4.3 Facilities ....................................................................................................................................... 31 4.4 Personnel Resources............................................................................................................... 33 4.5 System Maintenance .............................................................................................................. 34 4.6 Policy and Procedures............................................................................................................ 34 4.7 Other Support ........................................................................................................................... 34 5 Operational Scenarios .............................................................................................36 5.1 Typical Operations................................................................................................................... 36 5.2 Atypical Operations ................................................................................................................ 44 6 Performance Measures ............................................................................................49 6.1 Performance Metrics .............................................................................................................. 49 Appendices High Level Bridge ITS Concept of Operations (ConOps) List of Tables Table 2-1: Operational Needs – Data Collection and Monitoring ................................................ 8 Table 2-2: Operational Needs – Roadway and Roadside Elements............................................ 10 Table 2-3: Operational Needs – Information Messaging and Dissemination ........................ 12 Table 2-4: Operational Needs – Communications ............................................................................ 13 Table 2-5: Operational Needs – Processes and Procedures .......................................................... 14 Table 5-1: Peak Friday Evening – Stakeholders’ Roles and Responsibilities ........................... 38 Table 5-2: Peak Saturday Midday – Stakeholders’ Roles and Responsibilities ...................... 40 Table 5-3: Peak Sunday Afternoon - Stakeholders' Roles and Responsibilities .................... 42 Table 5-4: Congestion Alarm - Stakeholder's Roles and Responsibilities ................................ 46 Table 5-5: Incident Detection – Supplemental Stakeholders’ Roles and Responsibilities . 48 Table 6-1: Performance Metrics ................................................................................................................ 50 High Level Bridge ITS Concept of Operations (ConOps) List of Figures Figure 3-1: TM22 - Dynamic Lane Management and Shoulder Use Service Package ........ 18 Figure 3-2: TM01 – Infrastructure Based Traffic Surveillance ........................................................ 21 Figure 4-1: Existing NHDOT CCTV camera view showing I-95 Northbound congestion... 23 Figure 4-2: MVDS side-firing coverage .................................................................................................. 23 Figure 4-3: RWIS Field Devices and Data Communication ............................................................ 24 Figure 4-4: WX01 Weather Data Collection Information Flows ................................................... 25 Figure 4-5: TM06 Traffic Information Dissemination........................................................................ 26 Figure 4-6: Overhead DMS in New Hampshire .................................................................................. 27 Figure 4-7: Ground-Mounted DMS in New Hampshire .................................................................. 27 Figure 4-8: Semi-Permanent PCMS in New Hampshire .................................................................. 28 Figure 4-9: Real-Time Travel Time Sign in Maine .............................................................................. 28 Figure 4-10: Lane Control Signs................................................................................................................ 29 Figure 4-11: Existing microwave radio antenna located on the High Level Bridge ............. 29 Figure 4-12: Fiber Optic Cable ................................................................................................................... 30 Figure 4-13: Fiber optic cable installation in New Hampshire ...................................................... 30 Figure 4-14: New England 511 Web Portal, New England Compass ATMS ............................ 31 Figure 4-15: New Hampshire TMC .......................................................................................................... 32 Figure 4-16: Maine Turnpike Authority TMCC .................................................................................... 32 Figure 4-17: NHDOT Bridge Maintenance Facility location ........................................................... 33 High Level Bridge ITS Concept of Operations (ConOps) This page intentionally left blank. High Level Bridge ITS Concept of Operations (ConOps) Scope and Background Chapter 1 provides general project background including the problem statement, the system objectives, and an overview of the rest of the document. 1.1 Purpose The New Hampshire Department of Transportation (NHDOT), Maine Department of Transportation (MaineDOT), and Maine Turnpike Authority (MTA) have jointly initiated a project to implement a part-time shoulder use (PTSU) system between the State of New Hampshire and the State of Maine using the Interstate 95 (I-95) corridor bridge over the Piscataqua River. This shoulder lane would serve as an available fourth lane for travel during peak traffic when the travel demand exceeds the available capacity of the bridge. The purpose of the Concept of Operations (ConOps) document is to serve as a conceptual guide for the design, implementation, and operation of the PTSU system. This report describes the characteristics of the proposed PTSU system from the perspective of the