Knowledge Resources

The Federal Highway Administration initiated a study to explore the benefits and costs of fully deploying operational strategies and integrating ITS in the large metropolitan area of Seattle. The strategies included in Seattle's Full Operations and ITS Deployment Scenario were identified by consulting with local agencies to identify the overall ITS program planned through the next 25 years. The benefits are contingent on complete deployment of the full operations and ITS deployment scenario. The selected strategies are listed in the following table.

Category	Strategy
Arterial Traffic Management Systems	Central Control Signal Coordination
	Emergency Vehicle Signal Preemption
	Transit Vehicle Signal Priority
Freeway Management Systems	Central Control Ramping Metering
Transit Management	Fixed-Route Automated Scheduling and Automatic Vehicle Location
	Fixed-Route Security Systems
	Electronic Transit Fare Payment
Incident Management Systems	Incident Detection, Verification, Response, and Management
Emergency Management Systems	Emergency Vehicle Control Service
	Telemedicine
	Emergency Vehicle AVL
Traveler Information	Phone- and Web-Based Traveler Information System
	Kiosk-Based Traveler Information
	Highway Advisory Radio
	Dynamic Message Signs
Crash Prevention and Safety	Railroad Crossing Monitoring Systems
Commercial Vehicle Operations	Weigh-in-Motion and Safety Information Exchange
	Combination Screening and Clearance
Supporting Deployment	Traffic Management Center
	Transit Management Center
	Emergency Management
	Information Service Provider Center
	Closed Circuit TV and Loop Detectors

Benefits

• The ITS improvements would result in decreased vehicle pollutants and reduced fuel use in the Seattle area.
• Full deployment would result in a reduction for all emissions analyzed. Carbon monoxide and hydrocarbon emissions were reduced by approximately 16 percent and 17 percent, respectively, while nitrous oxides were reduced by more than 21 percent.
• Fuel use in the region was cut by more than 1 million gallons per day, a total reduction of more than 19 percent. This represents an average savings of more than 0.1 gallons per trip.