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Queue Warning Implemented as Part of an Integrated Active Traffic Management System Estimated to Reduce Travel Time up to 5.6 Percent and Reduce Crash Risk up to 28 Percent.

METHODOLOGY A dynamic traffic assignment (DTA) simulation platform was developed to perform microscopic simulations to test IATM control strategies. The effectiveness of each selected IATM strategy…
Content type
Date Posted
11/30/2022

In Driving Simulator Study, Forward Collision and Pedestrian-to-Vehicle Warnings Reduced Crash Rates by 56 to 97 Percent in Unpredictable Pedestrian or Distraction Cases.

Methodology A total of 49 licensed drivers completed the experiment, which consisted of driving simulated scenarios both with and without the applications providing safety warnings. FCW was tested in…
Content type
Date Posted
02/01/2022

A prototype Integrated Dynamic Transit Operations (IDTO) system saved transit riders 13 to 39 minutes for each successfully protected trip connection.

A two-site prototype demonstration of T-CONNECT and T-DISP was conducted in Columbus, Ohio and Central Florida. (D-RIDE was not tested in practice at either site due to a partner agency withdrawing…
Content type
Date Posted
08/31/2017

In Orlando, Transit Signal Priority and Bus Rapid Transit systems were estimated to reduce travel times up to 26 percent for all vehicles and reduce delays up to 64 percent for buses.

Content references source material no longer available at its original location.
Methodology Microsimulation and statistical analysis were used to develop BRT models. Analysis was performed on the I-Drive test corridor to compare performance before and after the implementation…
Content type
Date Posted
07/31/2017

Field data collected over the last two decades show variable speed limit (VSL) systems can reduce crash potential by 8 to 30 percent.

FINDINGS The data below excerpted from Table-1 of the source report highlights findings from the literature search.   Type of Test Location Major Findings Field…
Content type
Date Posted
12/07/2012

91 percent of volunteer drivers that tested V2V communications safety features indicated they would like to have these technologies on their personal vehicle.

METHODOLOGY After participants were exposed to each functional application, the experimenter asked a series of questions to capture data on immediate impressions, safety application effectiveness,…
Content type
Date Posted
08/24/2012

In Florida, the addition of Open Road Tolling (ORT) to an existing Electronic Toll Collection (ETC) mainline toll plaza decreased delay by 50 percent for manual cash customers and by 55 percent for automatic coin machine customers, and increased spee

FINDINGSThe analysis showed average reduced delays for manual cash customers by 49.8 percent, for Automatic Coin Machine (ACM) customers by 55.3 percent, and increased the speed by 57 percent in the…
Content type
Date Posted
05/30/2008

In Florida, the addition of Open Road Tolling (ORT) to an existing Electronic Toll Collection (ETC) mainline toll plaza decreased crashes by an estimated 22 to 26 percent.

FINDINGSAn analysis of crash data resulted in a 22 percent drop in total crashes at the plaza and 26 percent drop in the plaza’s area of influence. Based on the total crashes, average AADT (Annual…
Content type
Date Posted
05/30/2008

In Central Florida, focus group participants involved in a smart card study using a single card for multiple payment applications indicated that the card provided convenience and improved their transportation experience.

RESULTSThe discussion groups followed a series of open-ended questions and group polling to obtain cardholder opinions, attitudes, and suggestions. The results indicate:Participants reported that the…
Content type
Date Posted
05/22/2008

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

Use recommended practices to provide accurate travel time messages to the public using Dynamic Message Signs (DMS).

An examination of databases and a sampling of locations reveal at least 12 metropolitan areas that are providing travel time messages on DMS. But at least 25 other metropolitan areas are gathering…
Content type
Date Posted
01/21/2007

Establish a forum for decision-makers and project managers to come together to receive project updates, work through critical project issues, make decisions, and support successful institutional collaboration in a project involving multiple agencies.

The implementation team for the ORANGES project created a core management steering group that was used to collaborate effectively on a variety of technical and operational issues associated with the…
Content type
Date Posted
04/07/2006

Develop a detailed cardholder recruitment plan in the planning phase of the project, to provide guidance on processes to set pricing, and to ensure high user involvement and loyalty.

The ORANGES experience showed that developing a recruitment plan in the project planning phase would help to better ensure that the smart cards are actively used. This experience also showed that…
Content type
Date Posted
02/23/2006

Establish a clear understanding among all partners on the level of technical support to be provided by suppliers and integrators, as equipment provided in-kind or at a reduced cost is often provided with minimal technical support.

The Oranges experience showed that equipment provided "in-kind" or at a reduced cost was often provided with minimal technical support and this caused a number of complications on the project.…
Content type
Date Posted
02/23/2006

Provide for large sample sizes when conducting before/after data collection efforts, to avoid impacting the ability to reveal statistically significant differences during the evaluation's statistical analysis.

When designing a field study or experiment to investigate the effects of different conditions in a before and after design, there are a number of the issues that the study designers must be aware of…
Content type
Date Posted
02/23/2006

Seek assurances from your suppliers and sub-contractors, that their production and manufacturing schedules will meet your project schedule and inventory requirements throughout the lifecycle of the project.

The ORANGES experience demonstrated that limiting the number of customers using multiple-application electronic payment systems (through limited smart card availability) can negatively effect the…
Content type
Date Posted
02/23/2006

Include significant planning and development time in the overall project schedule to accommodate identifying and addressing the various compatibility issues, to integrate existing legacy system equipment across multiple agencies.

The ORANGES experience illustrated that it is necessary to include significant planning and development time in the overall project schedule when a regional system is being implemented. Given the…
Content type
Date Posted
02/23/2006

Between 2003 and 2007, annual operating costs and revenues at 15 tolling agencies averaged $85.825 million and $265.753 million, respectively.

This report covered an analysis of tolling systems to help state officials and other policy makers discuss the implementation and operational costs of alternative revenue-generating systems. Three to…
Content type
Made Public Date
12/14/2011

From the 511 Deployment Coalition case study: total costs (to design, implement, and operate for one year) averaged $2.5 million among six statewide systems and $1.8 million among three metropolitan systems.

Based on data from six separate studies, the costs to retime a traffic signal range from $2,500 to $3,100 per intersection per update.

Optimizing signal timing is considered a low-cost approach to reducing congestion. Based on data from six separate studies, the costs range from $2,500 to $3,100 per signal per update. While this…
Content type
Made Public Date
01/19/2007

The cost of retiming 16 signals at the Mall of Millenia (Florida) was about $3,100 per intersection.

Optimizing signal timing is considered a low-cost approach to reducing congestion. Based on data from six separate studies, the costs range from $2,500 to $3,100 per signal per update. While this…
Content type
Made Public Date
01/19/2007