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19 results found searching for projects related to Didier M Valdes Diaz, Ph.D.

Analyzing the Performance of Remote-Drivers on Transit Shuttle Short Routes
Using driving simulation, this project will study how a remote driver performs when operating a transit vehicle in complex scenarios that involve pedestrian-avoidance maneuvers. These types of maneuve ...
Assess Highway Construction Workers´ Behavior while Driving through Work Zones in Comparison to General Drivers Sensitized Using Virtual Reality and a Driving Simulator
To ensure the safety of construction workers and drivers in work zones is a challenge due to the work zones complex geometry, which includes the temporary presence of signs, channeling devices, lane r ...
ASSESSING A TWO-STEP POSTED SPEED REDUCTION AS A POTENTIAL COUNTERMEASURE TO IMPROVE SAFETY IN SCHOOL ZONES USING DRIVING SIMULATION
According to NHTSA, speeding is a major contributory factor of severe injuries and deaths in school zones. In a study performed at UPRM, data showed that in 68% of schools in the western region of PR, ...
Assessing the Effect of Drivers’ Behavior in Rural Roads with Advanced Driver Assistance Systems Using a Driving Simulator
Traffic crashes in rural roads are a serious safety related issue because of the disproportionality between fatalities and the rural population. As a result of this concern, the safety of rural roads ...
Assessing the Impact of Smartphone Usage While Driving in Work Zones
Advances in technology coupled with lower ownership costs have increased the number of adults who own and use smartphones. According to a Pew Research Center report titled “Technology Device Ownersh ...
Assessment of Drivers' Behavior and Workload while Interacting with E-scooters Using a Driving Simulator
Motorized scooters (e-scooters) have become an emerging alternative mode of transportation in cities worldwide. E-scooters provide mobility as a service (MaaS) with benefits related to easement of mov ...
Driver and Pedestrian Behavior at Crosswalks in Modern Roundabouts using Virtual Reality
In the United States there are about 7,100 modern roundabouts (Kittelson & Associates, 2020). Roundabouts are generally associated with a reduction in crashes, but pedestrians face crossing difficulti ...
DRIVER’S SAFETY ASSESSMENT IN TWO-LANE RURAL ROADS WORK ZONES
Work zones generate several challenges in terms of safety for both workers and drivers. The complex geometry including the presence of temporary signs, channelizing devices, lane changes, lane reduct ...
Drivers’ Performance and Brain Workload Activities after Alcohol Consumption using Driving Simulation
Highway crashes are a serious social and public health problem across the globe. The issue of alcohol impaired driving is a contributory factor identified as a focal area for the US-DOT, FHWA, NHTSA, ...
Enhancing School Zone and School Bus Safety
Traffic crashes involving school-age children are a serious safety concern, as there has been an increase in the number of school-age pedestrians and cyclists injured and killed throughout the years. ...
Evaluation of Driver Workload and Training Strategies on a Diverging Diamond Interchange
The amount of information processed by drivers in freeways and arterials increases significantly at interchanges. The information includes changes in alignment and number of lanes, lane position, merg ...
Evaluation of Safety Enhancements in School Zones with Familiar and Unfamiliar Drivers
Traffic crashes in school zones are a serious safety concern, as there has been an increase in the number of school-age pedestrians and cyclists injured and killed throughout the years. This collabor ...
Impact of Road Information Assistive Systems on Pedestrian Crossing Safety
NHTSA (2019) reported that road-related fatalities in the United States (US) decreased in 2018 by 2.4% when compared with 2017. Nonetheless, pedestrian fatalities increased by 3.4% in the same period, ...
Impact of Turning Radius on Vehicle Speeds and Pedestrian Crossing Safety on Urban Unsignalized Intersections Using Virtual Reality
The study of road user behavior at intersections and its impact on pedestrian safety has significant relevance. About 62% of the fatal intersection crashes involving pedestrians happened at unsignaliz ...
Operational and Safety-Based Analyses of Varied Toll Lane Configurations
This research project is the Initial Collaborative Project for the University of Central Florida, University of Massachusetts - Amherst (UMass) and University of Puerto Rico as proposed to the USDOT i ...
Phase I: Evaluation of Real World Toll Plazas Using Driving Simulators
Toll plazas are becoming an essential part of the highway system, especially within the state of Florida. Many crashes reported on highways occur at toll plazas. A primary reason for vehicle collision ...
Phase II: Operational and Safety-Based Analyses of Varied Toll Lane Configurations
We are proposing the second phase of the Collaborative Project for the University of Central Florida, University of Massachusetts - Amherst (UMass) and University of Puerto Rico as proposed to the USD ...
Phase III: Operational and Safety-Based Analyses of Varied Toll Lane Configurations
Managed lanes facilities are providing an opportunity to reduce travel time as well as pollution worldwide. In 2013, Puerto Rico built their first ever two lane reversible Dynamic Toll Lane (DTL) fac ...
Study of Gap Acceptance and Walking Speeds of Pedestrians using Virtual Reality Simulation
The numbers of pedestrians killed on road crashes merits attention. In the United States, 5,987 pedestrian fatalities were registered in 2016; the highest number registered since 1990. One of the risk ...

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