Photos of cars on freeway, speeding sign

Freeway Management and Operations Handbook

Table of Contents

List of Figures

Figure 1-1. Vehicle Miles Traveled Versus Lane Mileage
Figure 1-2. Cartoon Analogy of Freeway Conditions
Figure 1-3. Typical Plots of Volume vs. Time-of-Day
Figure 1-4. Freeway Interchange (I81 / I690 in Syracuse, NY)
Figure 1-5. Toll Plaza
Figure 1-6. Generalized Relationships Between Speed, Density, and Flow Rate on Freeways
Figure 1-7. Another View of Congestion
Figure 2-1. Freeway Management "Tiers" and Activities
Figure 2-2. Framework for Regional Collaboration & Coordination
Figure 3-1. Activities That Comprise a Freeway Management & Operations Program
Figure 3-2. V-Diagram
Figure 3-3. Configuration Management Process
Figure 3-4. High Level Architecture Diagram
Figure 4-1. Estimated Frequency of Congestion, Volumes and Speeds
Figure 4-2. "Temperature" Diagram of Traffic Flow Conditions
Figure 4-3. Travel Times (by time of day) for a Specific Route
Figure 4-4. The Effect of Ramp Meters on Vehicle Volume (per lane) Throughput and Frequency of LOS F Operations
Figure 5-1. Example of Adding an Auxiliary Lane
Figure 5-2. Types of Freeway Ramps
Figure 6-1. Example of Diagrammatic Signing
Figure 6-2. Interchange Sequence Signs
Figure 6-3. Exit / Lane Drop Markings
Figure 6-4. Entrance Ramp Markings
Figure 7-1. Freeway Management Programs and Their Relationships with the Surface Transportation Program
Figure 7-2. Ramp Metering Signals
Figure 7-3. Metered Ramp
Figure 7-4. Ramp Closure Gate
Figure 7-5. HOV Ramp
Figure 7-6. Advance Ramp Control Warning Sign
Figure 7-7. Brochure Cover
Figure 8-1. Example of Managed Lanes
Figure 8-2. Dual-dual Section of New Jersey Turnpike
Figure 8-3. Accident Data on New Jersey Turnpike
Figure 8-4. I-5 Truck Bypass, Los Angeles
Figure 8-5. HOV Restrictions into NYC During Period Following September 11, 2001
Figure 8-6. Directional Peaks Potentially Mitigated by Reversible Lanes
Figure 8-7. Schematic of I-15 Reversible Lanes
Figure 8-8. Shirley Highway (I-395 Northern Virginia) Median Reversible Lanes
Figure 8-9. Mainline Meter on I-80, Oakland, CA (Westbound Direction)
Figure 8-10. Variable Speed Limit Sign
Figure 8-11. SR-91 Express Lanes
Figure 8-12. Speed Warning Sign
Figure 8-13. LCS (Germany)
Figure 8-14. Moveable Barrier Technology
Figure 8-15. Moveable Barrier Being Repositioned
Figure 8-16. The E-ZPass Process at a Toll Booth
Figure 8-17. Combi-Road Driverless Truck Guideway
Figure 9-1. Examples of Exclusive / Barrier-separated HOV Facility (Reversible)
Figure 9-2. Examples of Contraflow Lanes
Figure 9-3. Example of Concurrent Flow Lane
Figure 9-4. Concept of Excess Capacity
Figure 10-1. A Framework for Organizing and Sustaining Incident Management Programs
Figure 10-2. Timeline of Stages in the Traffic Incident Management Process
Figure 11-1. Special Event Operations Characteristics
Figure 11-2. Integration of Planned Special Event Management Phases
Figure 11-3. Planned Special Event Permit Process
Figure 11-4. Feasibility Study Analysis Steps
Figure 12-1. Website Showing Evacuation Routes
Figure 12-2. Contraflow Operational Scenarios
Figure 13-1. Sources and Uses of Traveler Information
Figure 13-2. Example of Signs with Fixed Number of Messages
Figure 13-3. Examples of Light-Emitting Matrix CMS Technologies
Figure 13-4. Portable CMS in Operation in a Work Zone
Figure 13-5. Highway Advisory Radio Station Along Freeway
Figure 13-6. Portable Highway Advisory Radio Station
Figure 13-7. Highway Advisory Radio Sign
Figure 13-8. Example of a Basic 511 System
Figure 13-9. Examples of Traveler Information Websites
Figure 13-10. Examples of Traveler Information Websites
Figure 13-11. Example of Traveler Information Websites (CCTV Selection and Viewing)
Figure 14-1. Transportation Management Center
Figure 14-2. Example of a TMC Floor Plan
Figure 14-3. Example Layout of a TMC Computer / Peripheral Room
Figure 14-4. Examples of TMC Workstations
Figure 14-5. Examples of User Interface Control Screens
Figure 14-6. Projection Television Display Wall in a TMC
Figure 14-7. Video Display Wall in a TMC
Figure 14-8. Machine and Human Sharing of Functions
Figure 14-9. Examples of Common LAN Topologies
Figure 14-10. "V" Diagram
Figure 14-11. Typical Data Flow Diagram
Figure 14-12. Configuration Management Process
Figure 15-1. Inductive Loop Detector System
Figure 15-2. Inductive Loop Configuration Example
Figure 15-3. Microwave Radar Operation
Figure 15-4. Multiple Detection Zone Configuration in a Passive Infrared Sensor
Figure 15-5. Scanning Infrared Laser Radar Two-Beam Pattern Across a Traffic Lane
Figure 15-6. Mounting of Ultrasonic Range-Measuring Sensors
Figure 15-7. Acoustic Array Sensor Mounted Along Roadway
Figure 15-8. Passive Infrared Combination Sensors
Figure 15-9. Call Box
Figure 15-10. CCTV Camera Assembly
Figure 15-11. Portable CCTV Assembly
Figure 15-12. Environmental Sensor Station
Figure 15-13. Surface Sensor
Figure 15-14. Projected Growth in Freeway Surveillance
Figure 15-15. Example of Website Showing Current Weather Conditions
Figure 16-1. Organizational Approaches for Regional Integration
Figure 16-2. Spectrum of Regional Integration Processes
Figure 16-3. TRANSCOM Regional Architecture Network
Figure 16-4. TRANSCOM Regional Architecture Event Tracking Interface
Figure 16-5. TRANSCOM Regional Architecture Map Viewer Interface
Figure 16-6. SRTMS Architecture
Figure 16-7. SRTMS Components
  Last modified: February 1, 2017