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Smartphone-Based School Zone Alert Application Lowered Probability of Speeding in All Four Tested Locations.

Methodology Four school zones equipped with beacons were selected for inclusion in a 5.7-mile driving circuit, and 50 participants drove through the circuit twice in an…
02/23/2021
Taxonomy: Bicycle Warning, Pedestrian Safety

Synchronizing Automated Vehicle Signaling with Easy-to-Understand Behavior Strongly Improved Pedestrian Confidence in Field Study.

Methodology A study by a team of researchers based in the Netherlands sought to understand how an AV's yielding behavior impacted the efficacy of its eHMI system. The experiment…
12/23/2020
Taxonomy: Pedestrian Safety, Driver Communication

Industry Report Finds that Equipping the Full U.S. Light Vehicle Fleet with Currently Available Crash Avoidance Systems Could Save up to 20,000 Lives per Year.

Methodology Fatality reduction benefits were examined for four existing crash avoidance technologies: automatic emergency braking (AEB), lane departure warning (LDW), blind spot…
12/22/2020
Taxonomy: Collision Avoidance, Intersection Collision Warning, Pedestrian Safety

Pedestrian Alert System Found to Not Produce Substantially Safer Behaviors Than Those Observed Under Baseline.

To study the potential effectiveness of pedestrian alert systems, a research team based out of Duke University tested the effectiveness of these systems in a live, outdoor environment. The team…
12/22/2020
Taxonomy: Pedestrian Safety

In-vehicle visual and audible safety alerts improved speed limit compliance and reduced driver speeds in Minnesota study.

MethodologyThe in-vehicle safety alerts used two different kinds of alerts: visual and audible. Visual alerts showed the same traffic control device on the smartphone as appeared on the roadside (e.g…
Taxonomy: Pedestrian Safety, Curve Speed Warning, In-Vehicle Systems

Heads up display pedestrian collision warnings help reduce reaction time, maximum deceleration, and, in some cases, stopping distance and braking time.

Findings/BenefitsReaction, Braking Time, and Time to Stop: Post-hoc tests found the virtual shadow reduced reaction time while increasing braking time, resulting in the same time to stop as the…
Taxonomy: Pedestrian Safety, Object Detection

A camera vision-based collision avoidance system (CAS) installed on buses in Miami-Dade had a benefit-cost ratio ranging from 1.24 to 1.86 on routes with high historical crash rates.

Data Limitations During the study, there were route changes that affected the ability to assess early data using the original experimental design. As a result, most of the analyses used the period…
07/29/2020
Taxonomy: Pedestrian Safety, Object Detection

A camera vision-based collision avoidance system (CAS) installed on buses in Miami-Dade increased transit operator response to rear-end and pedestrian conflict scenarios, but had mixed results with respect to user acceptance.

To measure driver acceptance, a survey of the operators was conducted to capture perceptions of ease of use, usefulness, warning effectiveness in each scenario, and system accuracy.Data…
07/29/2020
Taxonomy: Pedestrian Safety, Object Detection

Autonomous vehicles issuing "high-content" communications to pedestrians were rated as being more trustworthy and reassuring by a focus group set of participants with visual disabilities.

FINDINGS The researchers identified several major trends in the data:
  • The study found that persons with visual disabilities reported substantially higher feelings of…
05/20/2020
Taxonomy: Pedestrian Safety

Affirmative street-crossing notifications were found to be more reliable and trusted than negative notifications in a sample set of older pedestrians.

FINDINGSThe researchers found several key conclusions:
  • Participants who received permissive alerts were significantly more likely to cross the street when the gap in traffic was…
05/20/2020
Taxonomy: Pedestrian Safety
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