Knowledge Resources

Install detection sensors overhead on existing signal mast heads when possible, instead of using in-ground sensors to reduce both initial costs and maintenance costs.
The experience of Midtown in Motion project by NYC DOT with advanced signal control systems.

Use vehicle probes to monitor traffic cost-effectively, manage incidents and queue ups proactively, reduce delays, and increase traveler satisfaction along a multi-state transportation corridor.
I-95Corridor Coalition Experience with Vehicle Probes

Beware of costs, utility, reliability, and maintenance issues in deploying a statewide transportation network monitoring system.
Statewide systems implementation experience from iFlorida Model Deployment

Strengthen the ability to coordinate and manage operations for planned special events by co-locating a traffic management center with a public safety center with representatives from police, fire and 9-1-1.
Experience from Montgomery County, Maryland using ITS for planned special events.

Use portable ITS equipment to monitor and control traffic flow at major signalized intersections located at entrance and exit points near planned special events.
Experience from Dutchess County, New York using ITS for planned special events in a rural area.

Beware that modeling may not be a suitable substitute for before-after studies of ITS integration projects.
Experience from Minnesota's Traveler Information Guidance and Emergency Routing (TIGER) Project.

Improve overall usefulness of a closed-circuit television (CCTV) camera by expanding the coverage, color-vision features, and operational availability of the camera.
Monroe County, New York's experience in ITS camera deployment and system integration.

Include driver age, time of day, and intersection characteristics in the design of red light violation algorithms and warning systems, and their field operational tests.
Knowledge gained from an analysis of four years of red light violation data gathered from 11 signalized intersections in Sacramento, California

Identify a single agency to be responsible for maintenance of an emergency vehicle preemption system.
The experience of multiple agencies with emergency vehicle preemption systems.

Conduct rigorous testing prior to deployment of an emergency preemption system to avoid potential problems and negative system impacts.
The experience of multiple agencies with emergency vehicle preemption systems.

Beware of the likely trade-off between a decrease in the frequency of right-angle crashes and an increase in the frequency of rear-end crashes when considering installation of red-light-cameras.
Experience from a national evaluation of red-light cameras

Implement infrastructure-based collision avoidance technology to mitigate risks at crash prone intersections.
A research project based on literature reviews and working with Virginia, California, and Minnesota.

Identify methods to distribute automated vehicle identification tags to improve market penetration when collecting arterial travel speed information.
San Antonio's experience with automated vehicle identification tags.

Follow a modular approach when deploying complex projects in locations with a shortened construction season.
Experience from the Integrated Corridor Traffic Management Project in Minnesota