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Conduct Durability Tests to Ensure Antenna Mounting Supports Proper Connected Vehicle Communications for Large Vehicles.

Conduct interoperability test to identify potential issues that would require resolution prior to the sites advancing to an operational phase. The three-day testing event was a major victory for the…
Content type
Date Posted
02/29/2024

Leverage Supplementary Communication Protocols To Disseminate Traveler Information Messages (TIMs) Beyond the Deployment Region To Maximize Impacts of Connected Vehicle Technologies.

Leverage supplementary communication protocols to disseminate traveler information messages (TIMs) beyond the deployment region to maximize CV impacts. When there were a limited number of roadside…
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Date Posted
04/28/2023

Manage Deployment Risks Related to Connected Vehicle Technology Maturity by Reducing Exposure to External Uncertainties and Adding Testing at an Earlier Stage.

Broaden the definition and concept of technical maturity to increase stakeholder knowledge and allow for better risk management. The lack of technology maturity resulted in challenges such as…
Content type
Date Posted
12/28/2022

Deliver Firmware Updates and Configure On-Board Units (OBUs) Remotely to Improve Operating Efficiency and Minimize Trips to Connected Vehicle (CV) Equipment Service Centers.

Deliver updates to the on-board units (OBUs) remotely to improve operating efficiency. Updating the firmware and configuration parameters remotely allowed the THEA CVPD team to push updates to the…
Content type
Date Posted
11/28/2022

Improve the Validity of V2V Alerts with Better Accounting of Relative Elevation and Heading Between the Host Vehicle and Remote Vehicle, found by THEA Connected Vehicle Pilot.

Some key lessons learned from the Tampa, Florida CVP program included: Utilize secure data storage platforms when analyzing data that may contain personally identifiable information (PII).…
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Date Posted
10/26/2022

Designing Questions about Speed in Several Different Ways May Help Improve the Usefulness of Automated Shuttle Survey Results, as Low Speeds Have a Complicated Relation to User Acceptance.

The following are several lessons learned from the projects for the development of future surveys about automated shuttles as they relate to survey population, survey approach, and questionnaire…
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Date Posted
08/25/2021

Automatic Pedestrian Detection Technology Can Successfully Detect Pedestrians Up to 92 Percent of the Time at Midblock Crosswalks and Up to 94 Percent of the Time at Signalized Intersections.

To enable assessment of detection accuracy, researchers installed video cameras to record observations for later comparison with the system’s detection output. All three systems were able to…
Content type
Date Posted
06/29/2021

The Tampa Connected Vehicle Pilot Identified Smartphone Limitations in Implementing the Requirements for Pedestrian Safety Applications.

One of the goals of the CV Pilot Program was to resolve technical deployment issues. THEA's pilot deployment exposed challenges implementing the system's …
Content type
Date Posted
05/19/2021

The Tampa Connected Vehicle Pilot Program investigates damage to roadside units (RSUs) near lightning strikes and improves transient surge immunity by verifying nearby support structures are properly grounded.

Refine proper antenna placement on connected vehicles (particularly commercial vehicles) to reduce DSRC ‘shadow’ areas where DSRC signal is degraded.

Infrastructure integrating the next generation internet standard (IPV6) is crucial to support the future growth of connected vehicle networks.

Early CV deployers must assess existing agency systems and networks as well as their change control procedures to accommodate the security needs of CV technology.

The following lessons address changes agencies may have to make to their existing systems and/or operations to accommodate the security needs of CV technology. Emphasis is particularly placed on the…
Content type
Date Posted
05/20/2019

CV Pilots find success in implementing data collection techniques that focus on edge computing to avoid the unmanageable flow and processing of data at a central TMC.

The following lessons were identified regarding the sensitivities with the type and amount of data that needs to be collected and the need for a data governance framework that outlines how data will…
Content type
Date Posted
04/22/2019

During system testing, CV Pilot sites discover the importance of having expertise in detecting and mitigating interferences with radio frequency and GPS signals

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.

Refine institutional arrangements when deploying connected vehicle technology to outline the expectations of partners in terms of service, outcomes and reporting.

Connected vehicle deployers should assess field equipment and organizational capabilities that will be needed to support core CV components.

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.

One of the goals of the CV Pilot Deployments is to accelerate the deployment of interoperable connected vehicle technologies in the advancement of the national highway system. The vision for…
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Date Posted
11/28/2018

Connected Vehicle Pilot Deployment Program yields program management best practices for integrating and testing large disparate systems.

Each of the three Connected Vehicle Pilot Deployment sites (Wyoming, Tampa, NYC), while unique regarding size, features, and functionality to be deployed, are all examples of large disparate systems…
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Date Posted
09/13/2018

For pedestrian safety warning applications, opt to collect pedestrian location data from LIDAR sensors instead of pedestrian mobile devices that often have insufficient accuracy.

All of the connected vehicle applications being implemented and evaluated in the Connected Vehicle Pilot Deployment Program did not need to be developed from scratch. Software developers for the…
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Date Posted
06/21/2018

When installing antennas on streetcars to support wireless connected vehicle applications, verify that radio performance is not compromised by interference from high-voltage power lines.

In Tampa, the project involves installing radios and computers in over 1600 vehicles and in over 40 fixed locations at downtown intersections to enable vehicle-to-vehicle (V2V) and vehicle-to-…
Content type
Date Posted
05/31/2018

Perform early real-world testing of connected vehicle technology with actual infrastructure in place to verify end-to-end system/application performance

Use local student mechanics where possible to perform CV equipment installations to provide students with required trainee experience and to contain costs

Tampa-Hillsborough Expressway Authority (THEA) will implement multiple connected vehicle applications in the Tampa Central Business District (CBD) to improve safety, mobility, and environmental…
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Date Posted
04/18/2018

Consider installing additional vehicle detection equipment if it is determined that there is not sufficient market penetration for CV traffic signal control applications to work at their full potential

The THEA project involves installing radios and computers in over 1600 vehicles (including private cars, buses, and streetcars) and in over 40 fixed locations at downtown intersections to enable…
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Date Posted
12/19/2017

Emphasize financial sustainability in concept development. Keep long-term funding goals in mind when tailoring a concept to meet a short-term budget.

LESSONS LEARNED FROM USDOT PERSPECTIVE:     Program Management (Acquisition Strategy and Outreach) Conduct consistent and organized meetings with the entire acquisition team (federal…
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Date Posted
03/27/2017

Make aggressive use of marketing to increase call volume and improve cost efficiency of 511 services deployment.

Higher call volume leads to greater system efficiency of 511 systems because O&M costs can be distributed over many callers. Despite this fact, marketing and evaluation was the smallest cost…
Content type
Date Posted
07/19/2010

Pilot Implementation of Active Work Zone Awareness Devices at Seven Study Sites in Florida Increased Safe Driving Behavior by 44 Percent and Reduced Risky Driving Behavior by 43 Percent.

METHODOLOGY The data collection process utilized two devices: a smart sensor which records vehicle speed per lane, and a camera which is used to document traffic conditions, traffic signal…
Content type
Date Posted
08/31/2023

Risk Analysis Using Crash and Near-Crash Data Finds a 26 Percent Reduction in Likelihood of a Crash Involving Severe Injuries in a Connected Vehicle Versus a Vehicle with More Traditional Line of Sight System.

METHODOLOGY The study utilized the SHRP2 NDS database that consisted of over 5.5 million trips driven by 3,542 drivers across six sites in the U.S. First, relevant events from the database were…
Content type
Date Posted
04/24/2023

Tampa Connected Vehicle Pilot Reported 79 Percent of the Participants that Experienced the End-of-Ramp Deceleration Warning Application Found it Helpful when Approaching Queues.

METHODOLOGY The stakeholder acceptance evaluation used qualitative interviews, an online survey, and a virtual workshop. The user satisfaction evaluation was conducted via online surveys…
Content type
Date Posted
12/20/2022
Taxonomy (ARC-IT) V2V Basic Safety (VS02)

Environmental Impact Evaluation of Connected Vehicle End-of-Ramp Warning in Tampa, Florida Estimated That Annual Carbon Dioxide Emissions Were 240 Kilograms Lower in the Post-Deployment Period.

Methodology The results from a deployed use case, congestion reduction and collision avoidance due to queuing on the exit ramp from the Reversible Express Lanes (REL) during the morning peak, were…
Content type
Date Posted
11/30/2022

Tampa Connected Vehicle Pilot Showed a Nine Percent Decrease in Rate of Forward Collision Conflicts and a Nearly 30 Percent Reduction in Travel Times.

Methodology The study was split into treatment (HMI enabled) and control (HMI disabled) groups using a randomized two-to-one matching (two treatment to one control) stratified by gender, age, income…
Content type
Date Posted
07/27/2021

Connected Vehicle Pilot in Tampa Successfully Alerted Drivers in 14 Potential Wrong-Way Ramp Entries and Nine Potential Trolley Crashes over 18 Months.

THEA led the CV Pilot Deployment in Tampa, Florida, which included as a goal the use of CV technology to reduce the risk of collisions. One scenario being targeted in the deployment…
Content type
Date Posted
03/31/2021

Following a small-scale launch of a real-time transit information systen in Tampa, 64 percent of users reported spending less time waiting at the bus stop.

Content references source material no longer available at its original location.
Methodology The transit agency and a research team pursued a small-scale launch of a transit traveler information system that provided RTI for HART buses. The study’s 268 participants were randomly…
Content type
Date Posted
02/14/2017

A connected vehicle pilot project involving over 1,600 vehicles in Tampa's central business district was estimated to cost $17.7 million.

In September of 2015, USDOT selected New York City Department of Transportation (NYCDOT), Wyoming Department of Transportation (WYDOT) and Tampa Hillsborough Expressway Authority (THEA) as the…
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Made Public Date
10/31/2017