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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 (2014-2017). Visit the full Congestion Subject index.

Congestion on State Highways
Subject/Topic 2014201520162017 
Accessibility    17/Q4
Before & After case studies14/Q215/Q316/Q317/Q4
Congestion Dashboard14/Q215/Q316/Q317/Q4
Congestion measurement principles14/Q215/Q316/Q317/Q4
Construction traffic mitigation    
Corridor Capacity Analysis    
        Amtrak Cascades 15/Q316/Q317/Q4
        Ferries14/Q215/Q316/Q317/Q4
        Interstate 514/Q215/Q316/Q317/Q4
        Interstate 9014/Q215/Q316/Q317/Q4
        Interstate 40514/Q215/Q316/Q317/Q4
        South Puget Sound Interstate 514/Q215/Q316/Q317/Q4
        Spokane Region Interstate 9014/Q215/Q316/Q317/Q4
        State Route 16714/Q215/Q316/Q317/Q4
        State Route 52014/Q215/Q316/Q317/Q4
        Tri-Cities US 395 corridor 15/Q316/Q317/Q4
        Vancouver region I-5, I-205 & SR-1414/Q215/Q316/Q317/Q4
Cost of commute congestion14/Q215/Q3
 
Data collection14/Q2
  
Economic factors that affect travel times14/Q2
14/Q4
15/Q2
15/Q3
16/Q317/Q4
Executive Summary of measures & results14/Q215/Q316/Q317/Q4
Fatal collisions statewide & in the Puget Sound area    
Freeway HOV & HOT lane system14/Q215/Q316/Q317/Q4
High Occupancy Toll (HOT) lanes14/Q2

 
High Occupancy Vehicle (HOV) lanes    
        Lane miles added14/Q2
  
        Lane reliability on major Puget Sound commute routes14/Q215/Q316/Q317/Q4
        Person throughput: HOV vs. general purpose lanes14/Q215/Q316/Q317/Q4 
        Relationship to transit ridership14/Q215/Q316/Q317/Q4
        Travel times on major Puget Sound commute routes14/Q2
  
Highway speed thresholds for congestion measurement14/Q215/Q316/Q317/Q4
Intelligent Transportation Systems (ITS)14/Q2
  
Key congestion performance measures14/Q2
  
Moving Ahead for Progress in the 21st Century (MAP-21): Capacity-related reporting requirements14/Q315/Q316/Q317/Q4
Percent of state highway system congested or delayed14/Q215/Q316/Q317/Q4 
Results Washington: Congestion measures14/Q215/Q316/Q317/Q4
Severe Congestion by Duration & Frequency    
        On Central Puget Sound commute routes14/Q215/Q316/Q317/Q4
        On Central Puget Sound commute routes14/Q215/Q316/Q317/Q4
Throughput productivity at select Puget Sound locations14/Q215/Q316/Q317/Q4
Traffic volumes at selected locations14/Q2
14/Q4
15/Q2
 
Travel Delay    
        Cost of travel delay14/Q215/Q3
 
        On major Puget Sound commute routes14/Q215/Q316/Q317/Q4
        On state highways by urban area14/Q215/Q3
 
        Statewide14/Q215/Q3
 
Travel time trends semi-annual update14/Q2
14/Q4
15/Q2
15/Q4

 
Travel Times & Reliability    
        On Eastern Washington (Spokane Area) 
        commute routes
14/Q215/Q316/Q317/Q4
        On major Central Puget Sound commute routes14/Q2
14/Q4
15/Q2
15/Q3
16/Q317/Q4
        On South Puget Sound commute routes14/Q215/Q3 16/Q317/Q4
        On Southwest Washington (Vancouver area) 
        commute routes
14/Q2 15/Q316/Q317/Q4
        On uncongested commute routes14/Q215/Q3
 
Vehicle Miles Traveled    
        Annual & per capita on all public roads &
        state highways
14/Q215/Q316/Q317/Q4

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