Safe-D: Safety through Disruption

Blog Archives


Impacts of Connected Vehicle Technology on Automated Vehicle Safety


Impacts of Connected Vehicle Technology on Automated Vehicle Safety
Impacts of Connected Vehicle Technology on Automated Vehicle Safety
2 Downloads

Radar and LiDAR Fusion for Scaled Vehicle Sensing


Radar and LiDAR Fusion for Scaled Vehicle Sensing
Radar and LiDAR Fusion for Scaled Vehicle Sensing
0 Downloads

Evaluation of transportation safety against flooding in disadvantaged communities


Evaluation of transportation safety against flooding in disadvantaged communities
Evaluation of transportation safety against flooding in disadvantaged communities
17 Downloads

Driving Risk Assessment Based on High-frequency, High-resolution Telematics Data


Driving Risk Assessment Based on High-frequency, High-resolution Telematics Data
Driving Risk Assessment Based on High-frequency, High-resolution Telematics Data
16 Downloads

TTI-Student-08 Identifying Deviations from Normal Driving Behavior


TTI-Student-08 Identifying Deviations from Normal Driving Behavior
TTI-Student-08 Identifying Deviations from Normal Driving Behavior
40 Downloads

04-117 A Sensor Fusion and Localization System for improving Vehicle Safety in Challenging Weather Conditions


04-117 A Sensor Fusion and Localization System for improving Vehicle Safety in Challenging Weather Conditions
04-117 A Sensor Fusion and Localization System for improving Vehicle Safety in Challenging Weather Conditions
60 Downloads

05-098 Crash Compatibility of Automated Vehicles with Passenger Vehicles


05-098 Crash Compatibility of Automated Vehicles with Passenger Vehicles
05-098 Crash Compatibility of Automated Vehicles with Passenger Vehicles
83 Downloads

TTI-Student-07 Detecting Pavement Distresses Using Crowdsourced Dashcam Camera Images


TTI-Student-07 Detecting Pavement Distresses Using Crowdsourced Dashcam Camera Images
TTI-Student-07 Detecting Pavement Distresses Using Crowdsourced Dashcam Camera Images
121 Downloads

03-049 Data Fusion for Non-Motorized Safety Analysis


03-049 Data Fusion for Non-Motorized Safety Analysis
03-049 Data Fusion for Non-Motorized Safety Analysis
174 Downloads

TTI-Student-06 Quantifying the Benefits and Harms of Connected and Automated Vehicle Technologies to Public Health and Equity


TTI-Student-06 Quantifying the Benefits and Harms of Connected and Automated Vehicle Technologies to Public Health and Equity
TTI-Student-06 Quantifying the Benefits and Harms of Connected and Automated Vehicle Technologies to Public Health and Equity
111 Downloads

04-104 Development of a Connected Smart Vest for Improved Roadside Work Zone Safety


04-104 Development of a Connected Smart Vest for Improved Roadside Work Zone Safety
04-104 Development of a Connected Smart Vest for Improved Roadside Work Zone Safety
187 Downloads

04-115 Reference Machine Vision for ADAS Functions


04-115 Reference Machine Vision for ADAS Functions
04-115 Reference Machine Vision for ADAS Functions
103 Downloads

VTTI-00-022 Automated Truck Mounted Attenuator


VTTI-00-022 Automated Truck Mounted Attenuator
VTTI-00-022 Automated Truck Mounted Attenuator
148 Downloads

SDSU-01-01 Prediction of Vehicle Trajectories at Intersections Using Inverse Reinforcement Learning


SDSU-01-01 Prediction of Vehicle Trajectories at Intersections Using Inverse Reinforcement Learning
SDSU-01-01 Prediction of Vehicle Trajectories at Intersections Using Inverse Reinforcement Learning
141 Downloads

04-113 Use of Disruptive Technologies to Support Safety Analysis and Meet New Federal Requirements


04-113 Use of Disruptive Technologies to Support Safety Analysis and Meet New Federal Requirements
04-113 Use of Disruptive Technologies to Support Safety Analysis and Meet New Federal Requirements
118 Downloads

04-103 Examining Seniors Adaptation to Mixed Function Automated Vehicles Analysis of Naturalistic Driving Data


04-103 Examining Seniors Adaptation to Mixed Function Automated Vehicles Analysis of Naturalistic Driving Data
04-103 Examining Seniors Adaptation to Mixed Function Automated Vehicles Analysis of Naturalistic Driving Data
222 Downloads

04-098 Data Mining Twitter to Improve Automated Vehicle Safety


04-098 Data Mining Twitter to Improve Automated Vehicle Safety
04-098 Data Mining Twitter to Improve Automated Vehicle Safety
205 Downloads

04-101 Safety Impact Evaluation of a Narrow Automated Vehicle-Exclusive Reversible Lane on an Existing Smart Freeway


04-101 Safety Impact Evaluation of a Narrow Automated Vehicle-Exclusive Reversible Lane on an Existing Smart Freeway
04-101 Safety Impact Evaluation of a Narrow Automated Vehicle-Exclusive Reversible Lane on an Existing Smart Freeway
120 Downloads

TTI-01-01 Analysis of an Incentive-Based Smartphone App for Young Drivers


TTI-01-01 Analysis of an Incentive-Based Smartphone App for Young Drivers
TTI-01-01 Analysis of an Incentive-Based Smartphone App for Young Drivers
234 Downloads

03-036 Modeling Driver Responses During Automated Vehicle Failures


03-036 Modeling Driver Responses During Automated Vehicle Failures
03-036 Modeling Driver Responses During Automated Vehicle Failures
352 Downloads

03-072 Preventing Crashes in Mixed Traffic with Automated and Human-Driven Vehicles


03-072 Preventing Crashes in Mixed Traffic with Automated and Human-Driven Vehicles
03-072 Preventing Crashes in Mixed Traffic with Automated and Human-Driven Vehicles
173 Downloads

03-073 Autonomous Emergency Navigation to a Safe Roadside Locations


03-073 Autonomous Emergency Navigation to a Safe Roadside Locations
03-073 Autonomous Emergency Navigation to a Safe Roadside Locations
136 Downloads

VTTI-00-029 Real-world Use of Automated Driving Systems and their Safety Consequences


VTTI-00-029 Real-world Use of Automated Driving Systems and their Safety Consequences
VTTI-00-029 Real-world Use of Automated Driving Systems and their Safety Consequences
265 Downloads

TTI-Student-02 Development of Analytic Method to Determine Weaving Patterns for Safety Analysis near Freeway Interchanges with Access Management Treatments


TTI-Student-02 Development of Analytic Method to Determine Weaving Patterns for Safety Analysis near Freeway Interchanges with Access Management Treatments
TTI-Student-02 Development of Analytic Method to Determine Weaving Patterns for Safety Analysis near Freeway Interchanges with Access Management Treatments
257 Downloads

03-082 Assessing Alternate Approaches for Conveying Automated Vehicle ‘Intentions’


03-082 Assessing Alternate Approaches for Conveying Automated Vehicle  ‘Intentions’
03-082 Assessing Alternate Approaches for Conveying Automated Vehicle ‘Intentions’
259 Downloads

03-087 Big Data Visualization and Spatiotemporal Modeling of Aggressive Driving


03-087 Big Data Visualization and Spatiotemporal Modeling of Aggressive Driving
03-087 Big Data Visualization and Spatiotemporal Modeling of Aggressive Driving
825 Downloads

02-019 Identification of Railroad Requirements for the Future Automated and Connected Vehicle (AV/CV) Environment


02-019 Identification of Railroad Requirements for the Future Automated and Connected Vehicle (AV/CV) Environment
02-019 Identification of Railroad Requirements for the Future Automated and Connected Vehicle (AV/CV) Environment
393 Downloads

03-051 Resomous ponse of AutonVehicles to Emergency hicles (RAVEV) Response Vehicles


03-051 Resomous ponse of AutonVehicles to Emergency hicles (RAVEV) Response Vehicles
03-051 Resomous ponse of AutonVehicles to Emergency hicles (RAVEV) Response Vehicles
174 Downloads

02-014 Formalizing Human- Machine Communication in the Context of Autonomous Vehicles


02-014 Formalizing Human- Machine Communication in the Context of Autonomous Vehicles
02-014 Formalizing Human- Machine Communication in the Context of Autonomous Vehicles
378 Downloads

VTTI-00-020 Standardized Performance Evaluation of Vehicles with Automated Capabilities


VTTI-00-020 Standardized Performance Evaluation of Vehicles with Automated Capabilities
VTTI-00-020 Standardized Performance Evaluation of Vehicles with Automated Capabilities
289 Downloads

TTI-Student-05 Exploring Crowdsourced Monitoring Data for Safety Final Research Report


TTI-Student-05 Exploring Crowdsourced Monitoring Data for Safety Final Research Report
TTI-Student-05 Exploring Crowdsourced Monitoring Data for Safety Final Research Report
607 Downloads

TTI-01-03 Comparison of SHRP2 Naturalistic Driving Data to Geometric Design Speed Characteristics on Freeway Ramps Final Research Report


TTI-01-03 Comparison of SHRP2 Naturalistic Driving Data to Geometric Design Speed Characteristics on Freeway Ramps Final Research Report
TTI-01-03 Comparison of SHRP2 Naturalistic Driving Data to Geometric Design Speed Characteristics on Freeway Ramps Final Research Report
534 Downloads

02-008 Optimizing the Lateral Wandering of Automated Vehicles to Improve Roadway Safety and Pavement Life


02-008 Optimizing the Lateral Wandering of Automated Vehicles to Improve Roadway Safety and Pavement Life
02-008 Optimizing the Lateral Wandering of Automated Vehicles to Improve Roadway Safety and Pavement Life
1363 Downloads

01-003 Data Mining to Improve Planning for Pedestrian and Bicyclist Safety


01-003 Data Mining to Improve Planning for Pedestrian and Bicyclist Safety
01-003 Data Mining to Improve Planning for Pedestrian and Bicyclist Safety
1016 Downloads

02-009: Vehicle Occupants and Driver Behavior: An Assessment of Vulnerable User Groups


02-009: Vehicle Occupants and Driver Behavior: An Assessment of Vulnerable User Groups
02-009: Vehicle Occupants and Driver Behavior: An Assessment of Vulnerable User Groups
701 Downloads

01-006 Implications of Truck Platoons for Roadside Hardware and Vehicle Safety


01-006 Implications of Truck Platoons for Roadside Hardware and Vehicle Safety
01-006 Implications of Truck Platoons for Roadside Hardware and Vehicle Safety
929 Downloads

01-005 Factors Surrounding Child Seat Usage in Rideshare Services


01-005 Factors Surrounding Child Seat Usage in Rideshare Services
01-005 Factors Surrounding Child Seat Usage in Rideshare Services
1541 Downloads

TTI-03-01 Emerging Legal Issues for Transportation Researchers Using Passively Collected Data Sets


TTI-03-01 Emerging Legal Issues for Transportation Researchers Using Passively Collected Data Sets
TTI-03-01 Emerging Legal Issues for Transportation Researchers Using Passively Collected Data Sets
995 Downloads

03-050 Design and Evaluation of a Connected Work Zone Hazard Detection and Communication System for Connected and Automated Vehicles (CAVs)


03-050 Design and Evaluation of a Connected Work Zone Hazard Detection and Communication System for Connected and Automated Vehicles (CAVs)
03-050 Design and Evaluation of a Connected Work Zone Hazard Detection and Communication System for Connected and Automated Vehicles (CAVs)
909 Downloads

03-040 Examining Senior Drivers Adaptation to Mixed Level Automated Vehicles: A Naturalistic Study


03-040 Examining Senior Drivers Adaptation to Mixed Level Automated Vehicles: A Naturalistic Study
03-040 Examining Senior Drivers Adaptation to Mixed Level Automated Vehicles: A Naturalistic Study
1113 Downloads

01-001 Analyzing Highway Safety Datasets: Simplifying Statistical Analyses from Sparse to Big Data


01-001 Analyzing Highway Safety Datasets: Simplifying Statistical Analyses from Sparse to Big Data
01-001 Analyzing Highway Safety Datasets: Simplifying Statistical Analyses from Sparse to Big Data
630 Downloads

TTI-Student-04 Motorcycle Crash Data Analysis to Support Development of a Retrofit Concrete Barrier System for Freeway Ramps


TTI-Student-04 Motorcycle Crash Data Analysis to Support Development of a Retrofit Concrete Barrier System for Freeway Ramps
TTI-Student-04 Motorcycle Crash Data Analysis to Support Development of a Retrofit Concrete Barrier System for Freeway Ramps
867 Downloads

01-004 Driver Training Research and Guidelines for Automated Vehicle Technology


01-004 Driver Training Research and Guidelines for Automated Vehicle Technology
01-004 Driver Training Research and Guidelines for Automated Vehicle Technology
1195 Downloads

02-016 Final Research Report: Older Drivers and Transportation Network Companies: Investigating Opportunities for Increased Safety and Improved Mobility


02-016 Final Research Report: Older Drivers and Transportation Network Companies: Investigating Opportunities for Increased Safety and Improved Mobility
02-016 Final Research Report: Older Drivers and Transportation Network Companies: Investigating Opportunities for Increased Safety and Improved Mobility
572 Downloads

02-020 Final Research Report: Behavior-based Predictive Safety Analytics – Pilot Study


02-020 Final Research Report: Behavior-based Predictive Safety Analytics – Pilot Study
02-020 Final Research Report: Behavior-based Predictive Safety Analytics – Pilot Study
1484 Downloads

TTI-01-04 Final Research Report: Influences on Bicyclists and Motor Vehicles Operating Speed within a Corridor


TTI-01-04 Final Research Report: Influences on Bicyclists and Motor Vehicles Operating Speed within a Corridor
TTI-01-04 Final Research Report: Influences on Bicyclists and Motor Vehicles Operating Speed within a Corridor
1234 Downloads

Abstract

This research explored (1) the relationship between suburban vehicle operating speed and roadway characteristics, especially the presence of bicyclists and (2) whether crowdsourced speed data could be used to estimate the unconstrained speed for a location. Both vehicle volume per lane and bicycle volume were found to be influential in affecting average speed on lower speed urban arterial roadways. For 40.3 km/hr (25 mph) sites, an increase of 19 vehicles per 15-min period would decrease average speed by 1.6 km/hr (1 mph), and an increase of more than 39 bicyclists per 15-min period would decrease average vehicle speed by a similar amount. Because of the limited number of 15-min periods with bicycle counts greater than 1, the research team also developed a model using all available 15-min periods with on-road speed data. Speed and volume data in 15-min increments for 2 weeks at nine sites were obtained using on-road tubes and via a vendor of crowdsourced speed data. The difference between the tube data and the crowdsourced data was calculated and called TMCS as a representation of tube (T) minus (M) crowdsourced (CS). The geometric variables that had the greatest influence on TMCS were the number of signals and the number of driveways within a corridor. When only including non-congested periods, weekends (Saturday or Sunday) were associated with the smallest TMCS.

02-027 Final Research Report: Street Noise Relationship to Bicycling Road User Safety


02-027 Final Research Report: Street Noise Relationship to Bicycling Road User Safety
02-027 Final Research Report: Street Noise Relationship to Bicycling Road User Safety
1139 Downloads

Abstract

Vulnerable road users, such as bicyclists, experience road noise directly. This study explored the relationship between bicycle crash risk and street-level road noise as measured in Austin, Texas and the Washington, D.C. metropolitan area, in addition to other factors. Construction and validation of a method to measure noise directly using consumer-accessible tools supports additional studies as well as potential public crowdsourcing applications for urban planning. Results from the two case sites were mixed. Street noise, as measured on our chosen routes, was not a consistent predictor of bicycle crash risk. However, our model explained over 87% of the variation in crash risk in the Washington, D.C. metropolitan area route, considering infrastructure, nearby bicycle commute mode share, and street noise. Findings from the two routes using our modeling approaches are not exhaustive, but rather an initial exploration of these relationships to support further work on the role of street noise in planning for safety.

02-026 Final Research Report: Sources and Mitigation of Bias in Big Data for Transportation Safety


02-026 Final Research Report: Sources and Mitigation of Bias in Big Data for Transportation Safety
02-026 Final Research Report: Sources and Mitigation of Bias in Big Data for Transportation Safety
1029 Downloads

Abstract

Emerging big data resources and practices provide opportunities to improve transportation safety planning and outcomes. However, researchers and practitioners recognize that big data includes biases in who the data represents and accuracy related to transportation safety statistics. This study systematically reviews both the sources of bias and approaches to mitigate bias through review of published studies and interviews with experts. The study includes quantified analysis of topic frequency and evaluation of the reliability of concepts by using two independent trained coders. Results show a need to keep transportation experts and the public central in determining the right goals and metrics to evaluate transportation safety, in the development of new methods to relate big data to the total population’s transportation safety needs, in the use of big data to solve difficult problems, and to work ahead of emerging trends and technologies.

02-010 Final Research Report: Safety Perceptions of Transportation Network Companies (TNCs) by the Blind and Visually Impaired


02-010 Final Research Report: Safety Perceptions of Transportation Network Companies (TNCs) by the Blind and Visually Impaired
02-010 Final Research Report: Safety Perceptions of Transportation Network Companies (TNCs) by the Blind and Visually Impaired
790 Downloads

TTI-01-05 Final Research Report: Exploring the Science of Reflectivity: Curriculum for Grades 4 through 6


TTI-01-05 Final Research Report: Exploring the Science of Reflectivity: Curriculum for Grades 4 through 6
TTI-01-05 Final Research Report: Exploring the Science of Reflectivity: Curriculum for Grades 4 through 6
204 Downloads