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Gray Notebook Subject Index: Congestion

The table below lists subjects included in the most recent four years of the Gray Notebook (2012-2015). The full subject index for Congestion on state highways can be accessed here (pdf 210 kb).

Congestion on State Highways
Subject/Topic 20122013 2014 2015
Before and After Case Studies12/Q213/Q214/Q215/Q3
Congestion Dashboard12/Q213/Q214/Q215/Q3
Congestion Measurement Principles12/Q213/Q214/Q215/Q3
Construction Traffic Mitigation12/Q2   
Corridor Capacity Analysis    
        Amtrak Cascades   15/Q3
        Ferries 13/Q214/Q215/Q3
        Interstate 5 13/Q214/Q215/Q3
        Interstate 90 13/Q214/Q215/Q3
        Interstate 405 13/Q214/Q215/Q3
        South Puget Sound Interstate 5 13/Q214/Q215/Q3
        Spokane Region Interstate 90 13/Q214/Q215/Q3
        State Route 167 13/Q214/Q215/Q3
        State Route 520 13/Q214/Q215/Q3
        Tri-Cities US 395 Corridor   15/Q3
        Vancouver Region I-5 and I-205 13/Q214/Q215/Q3
Cost of Commute Congestion12/Q213/Q214/Q215/Q3
Data Collection12/Q213/Q214/Q2 

Economic Factors that Affect Travel Times

12/Q2
13/Q2
13/Q4
14/Q2
14/Q4
15/Q2
15/Q3
Executive Summary of Measures and Results12/Q213/Q214/Q215/Q3

Factors Affecting Recurring and Nonrecurring Congestion

12/Q2
   
Fatal Collisions Statewide and in the Puget Sound Area12/Q2   
Freeway HOV and HOT Lane System12/Q213/Q214/Q215/Q3


High Occupancy Toll (HOT) Lanes


12/Q2
13/Q1
13/Q2
13/Q4


14/Q2
 
High Occupancy Vehicle (HOV) Lanes    
        Lane Miles Added12/Q213/Q214/Q2 
        Lane Reliability on Major Puget Sound Commute Routes12/Q213/Q214/Q215/Q3
        Person Throughput: HOV vs. General Purpose Lanes12/Q213/Q214/Q215/Q3
        Relationship to Transit Ridership12/Q213/Q214/Q215/Q3
        Travel Times on Major Puget Sound Commute Routes12/Q213/Q214/Q2 
        User Volumes and Compliance12/Q2   
Highway Speed Thresholds for Congestion Measurement12/Q213/Q214/Q215/Q3
Intelligent Transportation Systems (ITS)12/Q213/Q214/Q2 
Key Congestion Performance Measures12/Q213/Q214/Q2 
Moving Ahead for Progress in the 21st Century (MAP-21): Capacity-related Reporting Requirements 
13/Q2

14/Q3

15/Q3
Moving Washington: WSDOT's Strategies to Fight Congestion    
        Add Capacity Strategically12/Q2   
        Balanced Strategies12/Q2   
        Manage Demand12/Q2   
        Operate Efficiently12/Q2   
Percent of State Highway System Congested or Delayed12/Q213/Q214/Q215/Q3
Results Washington: Congestion Measures 13/Q214/Q215/Q3
Severe Congestion by Duration and Frequency    
        On Central Puget Sound Commute Routes12/Q213/Q214/Q215/Q3
        On Central Puget Sound Commute Routes 13/Q214/Q215/Q3
Throughput Productivity at Select Puget Sound Locations12/Q213/Q214/Q215/Q3

Traffic Volumes at Selected Locations
 
13/Q4
14/Q2
14/Q4

15/Q2
Travel Delay    
        Cost of Travel Delay12/Q213/Q214/Q215/Q3
        On Major Puget Sound Commute Routes12/Q213/Q214/Q215/Q3
        On Snoqualmie Pass 13/Q2  
        On State Highways by Urban Area12/Q213/Q214/Q215/Q3
        Statewide12/Q213/Q214/Q215/Q3

Travel Time Trends Semi-Annual Update

12/Q2
13/Q1
13/Q4
14/Q2
14/Q4
15/Q2
15/Q4
Travel Times and Reliability    
        On Eastern Washington (Spokane Area) 
        Commute Routes

12/Q2

13/Q2

14/Q2

15/Q3


        On Major Central Puget Sound Commute Routes


12/Q2
13/Q1
13/Q2
13/Q4

14/Q2
14/Q4

15/Q2
15/Q3
        On South Puget Sound Commute Routes 13/Q2 14/Q215/Q3
        On Southwest Washington (Vancouver Area) 
        Commute Routes
 
13/Q2

14/Q2

15/Q3
        On Uncongested Commute Routes12/Q213/Q214/Q215/Q3
Vehicle Miles Traveled    
        Annual and Per Capita on All Public Roads and 
        State Highways

12/Q2

13/Q2

14/Q2

15/Q3
        On Major Puget Sound Commute Routes12/Q213/Q2  
        On State Highways by Urban Area12/Q2   

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