Knowledge Resources

Provide commuters with predictive traffic measures to improve trip planning and reduce congestion during peak hours.
Santa-Clara County experience with intelligent traffic signals, real-time traffic data, intersection surveillance systems, and cloud technology with edge computing.

Greater adoption of CAV may result in long-term benefits but mid-term fluctuations for costs and congestion, according to predictive model.
A simulation model evaluated the potential impacts of increasing connected and automated vehicle (CAV) market penetration.

Refine proper antenna placement on connected vehicles (particularly commercial vehicles) to reduce DSRC ‘shadow’ areas where DSRC signal is degraded.
Lessons Learned from the Design/Build/Test Phase of the USDOT’s Connected Vehicle Pilot Program.

Connected vehicle deployers are encouraged to utilize multi-vendor outsourcing and to source suppliers early to create a collaborative environment that enables as much parallel work as possible.
Lessons Learned from the Design/Build/Test Phase of the USDOT's Connected Vehicle Pilot Program.

A Federal report highlights best practices for ITS programs that plan to implement connected vehicle (CV) technology.
Guidance for short-, medium-, and long-term transportation planning efforts.

USDOT Identifies Effective Ownership and Governance Model Areas of Interest for a Full-Scale SCMS deployment for Connected Vehicles.
USDOT-sponsored Security Credential Management System (SCMS) Deployment Governance and Ownership Workshop analyzes what it will take to establish a full-scale SCMS and governance entity to enable widespread connected vehicle deployment.

Perform robust observations at intersections before determining whether red-light cameras should be installed.
Understanding whether red-light cameras would be a useful in the first place.

Best practices to support the arrival of smart mobility for non-urban communities.
Ohio's 33 Smart Mobility Corridor demonstrates how smaller cities can leverage intelligent transportation technology to improve congestion, safety, and employment access.

RSU triangulation techniques and inertial GPS solutions can improve geolocation accuracy for connected vehicles operating in dense urban environments.
New York City CV Pilot considered location correction solutions to address GPS positioning challenges associated with the cities "urban canyons"

For pedestrian safety warning applications, opt to collect pedestrian location data from LIDAR sensors instead of pedestrian mobile devices that often have insufficient accuracy.
Success Stories from the USDOT’s Connected Vehicle Pilot Program.

Incorporate standardized over-the-air update procedures to permit efficient firmware updates for connected vehicle devices.
Success Stories from the USDOT’s Connected Vehicle Pilot Program.

Facing a gap in standards interpretation, the Tampa and New York City Connected Vehicle Pilot Sites worked together to harmonize message structure for pedestrian safety applications.
Experiences from the Connected Vehicle Pilot Deployment.

Perform early real-world testing of connected vehicle technology with actual infrastructure in place to verify end-to-end system/application performance
U.S. Department of Transportation Free Public Webinar Series on the Connected Vehicle Pilot Sites System Design Process

Integrate stop and caution warning signage into heads-up displays to help older drivers brake sooner for potential hazards.
Older drivers are over-represented in urban crashes, a German study found that in-vehicle driver warning systems could help with this problem.

Use a modular project structure and focus on high priority objectives and project components when deploying complex ITS projects such as those with connected vehicle technologies.
Program management experience during the Safety Pilot Model Deployment in Ann Arbor, Michigan

Develop a focused outreach plan that identifies all stakeholders, the message appropriate for each stakeholder and the method in which you will reach the stakeholders when embarking on a connected vehicle project.
Experience with outreach and showcasing activities during the Safety Pilot Model Deployment in Ann Arbor, Michigan

Develop a focused outreach plan that identifies all stakeholders, the message appropriate for each stakeholder and the method in which you will reach the stakeholders when embarking on a connected vehicle project.
Experience with outreach and showcasing activities during the Safety Pilot Model Deployment in Ann Arbor, Michigan

Specify and implement high accuracy vehicle location and pedestrian detection technology for connected vehicle transit safety applications.
Experience with the Transit Retrofit Package demonstration in Ann Arbor, Michigan.

Deploy arterial travel time detection systems incrementally to allow time to identify issues and fine-tune performance.
A review of arterial travel time technology in the United States and the United Kingdom

Separately deploying mileage-based user fee and in-vehicle safety alert functions helps ensure each technology has the best opportunity for user acceptance.
The 500-participant Minnesota Road Fee Test Study investigated technologies to charge mileage-based user fees and improve compliance with traffic control devices.

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