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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 385 kb).

Congestion on State Highways
Subject/Topic 2012 2013 2014 2015
Before and After Case Studies 12/Q2 13/Q2 14/Q2  
Congestion Dashboard 12/Q2 13/Q2 14/Q2  
Congestion Measurement Principles 12/Q2 13/Q2 14/Q2  
Construction Traffic Mitigation 12/Q2      
Corridor Capacity Analysis   13/Q2 14/Q2  
Cost of Commute Congestion 12/Q2 13/Q2 14/Q2  
Data Collection 12/Q2 13/Q2 14/Q2  

Economic Factors that Affect Travel Times

12/Q2
13/Q2
13/Q4
14/Q2
14/Q4

15/Q2
Executive Summary of Measures and Results 12/Q2 13/Q2 14/Q2  

Factors Affecting Recurring and Nonrecurring Congestion

12/Q2
     
Fatal Collisions Statewide and in the Puget Sound Area 12/Q2      
Freeway HOV and HOT Lane System 12/Q2 13/Q2 14/Q2  
Greenhouse Gas Emissions in the Central Puget Sound Area   13/Q2 14/Q2  


High Occupancy Toll (HOT) Lanes


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


14/Q2
 
High Occupancy Vehicle (HOV) Lanes        
        Lane Miles Added 12/Q2 13/Q2 14/Q2  
        Lane Reliability on Major Puget Sound Commute Routes 12/Q2 13/Q2 14/Q2  
        Person Throughput: HOV vs. General Purpose Lanes 12/Q2 13/Q2 14/Q2  
        Relationship to Transit Ridership 12/Q2 13/Q2 14/Q2  
        Travel Times on Major Puget Sound Commute Routes 12/Q2 13/Q2 14/Q2  
        User Volumes and Compliance 12/Q2      
Highway Speed Thresholds for Congestion Measurement 12/Q2 13/Q2 14/Q2  
Intelligent Transportation Systems (ITS) 12/Q2 13/Q2 14/Q2  
Key Congestion Performance Measures 12/Q2 13/Q2 14/Q2  
Marine Highways Performance   13/Q2 14/Q2  
Moving Ahead for Progress in the 21st Century (MAP-21): Capacity-related Reporting Requirements  
13/Q2

14/Q3
 
Moving Washington: WSDOT's Strategies to Fight Congestion        
        Add Capacity Strategically 12/Q2      
        Balanced Strategies 12/Q2      
        Manage Demand 12/Q2      
        Operate Efficiently 12/Q2      
Percent of State Highway System Congested or Delayed 12/Q2 13/Q2 14/Q2  
Results Washington: Congestion Measures   13/Q2 14/Q2  
Severe Congestion by Duration and Frequency        
        On Central Puget Sound Commute Routes 12/Q2 13/Q2 14/Q2  
        On Central Puget Sound Commute Routes   13/Q2 14/Q2  
Throughput Productivity at Select Puget Sound Locations 12/Q2 13/Q2 14/Q2  

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

15/Q2
Transit Ridership in the Central Puget Sound Area   13/Q2 14/Q2  
Travel Delay        
        Cost of Travel Delay 12/Q2 13/Q2 14/Q2  
        On All State Highways 12/Q2 13/Q2 14/Q2  
        On Major Puget Sound Commute Routes 12/Q2 13/Q2 14/Q2  
        On Snoqualmie Pass   13/Q2    
        On State Highways by Urban Area 12/Q2 13/Q2 14/Q2  
        Statewide Per Capita Delay 12/Q2 13/Q2 14/Q2  

Travel Time Trends Semi-Annual Update

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

15/Q2
Travel Times        
        On Eastern Washington (Spokane Area) 
        Commute Routes

12/Q2

13/Q2

14/Q2
 


        On Major Central Puget Sound Commute Routes


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

14/Q2
14/Q4


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

14/Q2
 
        On Uncongested Commute Routes 12/Q2 13/Q2 14/Q2  
        Reliability on Major Puget Sound Commute Routes 12/Q2 13/Q2 14/Q2  
        Reliability on South Puget Sound Commute Routes   13/Q2 14/Q2  
Vehicle Miles Traveled        
        Annual and Per Capita on All Public Roads and 
        State Highways

12/Q2

13/Q2

14/Q2
 
        On Major Puget Sound Commute Routes 12/Q2 13/Q2    
        On State Highways by Urban Area 12/Q2      

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