Most drivers have experienced a traffic signal that turns yellow just as they approach an intersection, which makes it difficult for them to decide whether to stop or proceed through it. The wrong choice in this situation, known as the “dilemma zone,” may lead to crashes, especially at high-speed intersections.
A major factor making driving difficult is hazards that are sudden and hard to predict. Roadside and in-vehicle display warning systems may help drivers handle these hazards by predicting their occurrence and providing advanced warning to the driver, according to a new study published in journal Human Factors.
Clemson University psychology professor and lead author on the paper Leo Gugerty and colleagues designed two driving simulator studies to compare the effectiveness of six types of roadway or in-vehicle warning systems. Participants were asked to navigate through traffic lights while their driving responses were measured based on the presence or absence of warning signals.
“In both studies, warnings led to more stopping at dilemma zone intersections and milder decelerations when stopping compared with no warning,” said Gugerty. “Drivers’ predominant response to warnings was anticipatory slowing on approaching the intersection, not speeding up.”
These advanced warning systems could improve driver safety by potentially reducing crashes at signalized intersections. This study provides some evidence that intelligent dilemma zone warnings help drivers behave more safely when approaching them.
“Sometimes drivers respond to safety measures in ways that undo safety benefits, such as driving faster when using antilock brakes,” he said. “However, the drivers in our simulator studies responded to the dilemma zone warning signals by driving more safely.”
Results indicated that both roadway and in-vehicle warnings led to more stopping and milder decelerations at dilemma zone intersections. When given advanced warning, the participants rarely exhibited unsafe driving behavior, such as accelerating to beat the lights. In time, implementation of such systems could lead to fewer traffic-related injuries and fatalities.
These studies may provide guidance to human factors researchers regarding performance models of how drivers use end-of-green warnings, control algorithms and warning displays for intelligent intersections and statistical methodology in human factors research.
Ranked No. 21 among national public universities, Clemson University is a major, land-grant, science- and engineering-oriented research university that maintains a strong commitment to teaching and student success. Clemson is an inclusive, student-centered community characterized by high academic standards, a culture of collaboration, school spirit and a competitive drive to excel.
Leo Gugerty | EurekAlert!
Siemens tests Intercity train for Deutsche Bahn in the Climatic Wind Tunnel in Vienna
21.01.2016 | Siemens AG
Siemens to equip Line 4 of the Metro Paris for driverless operation
11.01.2016 | Siemens AG
Using an ultra fast-scanning atomic force microscope, a team of researchers from the University of Basel has filmed “living” nuclear pore complexes at work for the first time. Nuclear pores are molecular machines that control the traffic entering or exiting the cell nucleus. In their article published in Nature Nanotechnology, the researchers explain how the passage of unwanted molecules is prevented by rapidly moving molecular “tentacles” inside the pore.
Using high-speed AFM, Roderick Lim, Argovia Professor at the Biozentrum and the Swiss Nanoscience Institute of the University of Basel, has not only directly...
If a person pushes a broken-down car alone, there is a certain effect. If another person helps, the result is the sum of their efforts. If two micro-particles are pushing another microparticle, however, the resulting effect may not necessarily be the sum their efforts. A recent study published in Nature Communications, measured this odd effect that scientists call “many body.”
In the microscopic world, where the modern miniaturized machines at the new frontiers of technology operate, as long as we are in the presence of two...
Researchers from the Max Planck Institute Stuttgart have developed self-propelled tiny ‘microbots’ that can remove lead or organic pollution from contaminated water.
Working with colleagues in Barcelona and Singapore, Samuel Sánchez’s group used graphene oxide to make their microscale motors, which are able to adsorb lead...
Neutron scattering and computational modeling have revealed unique and unexpected behavior of water molecules under extreme confinement that is unmatched by any known gas, liquid or solid states.
In a paper published in Physical Review Letters, researchers at the Department of Energy's Oak Ridge National Laboratory describe a new tunneling state of...
Honeycomb structures as the basic building block for industrial applications presented using holo pyramid
Researchers of the Alfred Wegener Institute (AWI) will introduce their latest developments in the field of bionic lightweight design at Hannover Messe from 25...
27.04.2016 | Event News
15.04.2016 | Event News
12.04.2016 | Event News
04.05.2016 | Physics and Astronomy
04.05.2016 | Physics and Astronomy
04.05.2016 | Materials Sciences