Joe Segale, P .E./PTP Vermont Agency of Transportation Policy, Planning and Research Bureau January 27, 2015
! Congestion Policy ! Congestion Causes ! Congestion Mitigation Strategies ! Managing Demand ! Managing & Operating the System ! Infrastructure
Delay (Seconds) Level of Characteristics Service Stop Sign Traffic Signal A Little or no delay < 10 < 10 B Short delays 10.1 ‐ 15 10.1 ‐ 20 C Average delays 15.1 ‐ 25 20.1 ‐ 35 D Long delays 25.1 ‐ 35 35.1 ‐ 55 E Very long delays 35.1 ‐ 50 55.1 ‐ 80 F Extreme delays > 50 > 80
VT 116 Hourly Traffic Volumes (Between Charlotte & Mechanicsville Roads) 1400 1200 1000 Vehicles per Hour 800 600 400 200 0 Weekday Weekend
Roadway Function Possible Peak Hour Context Congestion LOS Access & Through Traffic Policy Local Mobility & Circulation Speed Village More Less E or F Rural Less More C
Work Zones 10% Bad Weather 15% Bottlenecks 40% Traffic Poor Traffic Incidents Special Signal Timing 25% Events 5% 5% Source: Federal Highway Administration
Highway Capacity
! Compact mixed land uses ! Connected Complete Street Network ! Pedestrian and Bicycle Facilities ! Streetscape Design
! Traffic Signal Optimization ! Regular timing updates ! Adaptive Traffic Signals ! Access Management ! Traffic Control Officers ! Traveler Information ! Traffic Incident Management ! Work Zone Plans ! Special Event Plans
! Road network ! Upgrade existing roads ! Add new local streets ! Intersection Design Options ! Turn lanes ! Roundabouts ! Traffic signals ! Road Segments ! Rural road pulloffs ! Turn lanes ! Widen shoulders ! Add through lanes
! Establish Congestion Policy ! Manage Traffic Demand ! Support walking, biking, transit and rideshare ! Manage and Operate the System ! Provide Infrastructure to Add Capacity
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