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
High resolution rotational spectroscopy reveals an unprecedented number of conformations of an odorant molecule – a new world record!
In a recent publication in the journal Physical Chemistry Chemical Physics, researchers from the Max Planck Institute for the Structure and Dynamics of Matter...
Strands of cow cartilage substitute for ink in a 3D bioprinting process that may one day create cartilage patches for worn out joints, according to a team of engineers. "Our goal is to create tissue that can be used to replace large amounts of worn out tissue or design patches," said Ibrahim T. Ozbolat, associate professor of engineering science and mechanics. "Those who have osteoarthritis in their joints suffer a lot. We need a new alternative treatment for this."
Cartilage is a good tissue to target for scale-up bioprinting because it is made up of only one cell type and has no blood vessels within the tissue. It is...
Physicists in Innsbruck have realized the first quantum simulation of lattice gauge theories, building a bridge between high-energy theory and atomic physics. In the journal Nature, Rainer Blatt‘s and Peter Zoller’s research teams describe how they simulated the creation of elementary particle pairs out of the vacuum by using a quantum computer.
Elementary particles are the fundamental buildings blocks of matter, and their properties are described by the Standard Model of particle physics. The...
A year and a half on the outer wall of the International Space Station ISS in altitude of 400 kilometers is a real challenge. Whether a primordial bacterium...
Researchers at Case Western Reserve University have developed a way to swiftly and precisely control electron spins at room temperature.
09.06.2016 | Event News
24.05.2016 | Event News
20.05.2016 | Event News
27.06.2016 | Agricultural and Forestry Science
27.06.2016 | Physics and Astronomy
27.06.2016 | Life Sciences