scholarly journals Development of Standards for Production of an Exit Sign Lighting to Minimize Human Reaction Time - Part II: Combination of Graphical Symbol Colours

2020 ◽  
Vol 34 (6) ◽  
pp. 51-58
Author(s):  
Ryun-Seok Oh ◽  
Jun-Ho Choi
Keyword(s):  
Reaction Time ◽  
White Background ◽  
Color Combination ◽  
Emergency Situations ◽  
Human Reaction ◽  
Light Region ◽  
Graphic Symbol ◽  
Time Part ◽  
Color Combinations ◽  
Human Reaction Time

In emergency situations, exit sign lightings play a role in reducing evacuation time for occupants by providing accurate and prompt information on the correct evacuation direction. In other words, it can be said that the better the recognition of exit sign lighting, the greater the probability of securing the safety of life because the evacuation route information is given to the occupants and eventually the time taken for route selection and movement is shortened. In this study, human reaction time was measured for 27 kinds of graphic symbol color combinations of exit sign lightings in the visible light region, and through this, a graphic symbol color combination that can minimize reaction time to exit sign lightings was derived. As a result, it was found that the color combination of green and white background color, which is currently mainly used in Korea, has the shortest reaction time.

scholarly journals Development of Standards for Production of an Exit Sign Lighting to Minimize Human Reaction Time - Part I: The Minimum Effective Dimensions

2020 ◽  
Vol 34 (6) ◽  
pp. 44-50
Author(s):  
Ryun-Seok Oh ◽  
Jun-Ho Choi
Keyword(s):  
Reaction Time ◽  
Visual Recognition ◽  
Experimental Tests ◽  
Effective Dimension ◽  
Large Area ◽  
Human Reaction ◽  
Reaction Time Measurement ◽  
Time Part ◽  
Time Required ◽  
Human Reaction Time

Based on National Fire Safety Codes 303 in Korea, the size of an exit sign lighting to be installed is determined according to space use. Accordingly, a small exit sign lighting can be installed in a large area, which causes problems in the visual recognition of the exit sign lighting by occupants and increases the time required for evacuation. Therefore, in this study, human reaction time measurement experimental tests were conducted in a virtual reality environment to analyze the minimum effective dimension of an exit sign lighting. It was found that the minimum effective dimension of emergency exit sign lighting should be set to a length of 255 mm or more on one side of a 1:1 square display surface.

Effects of Aircraft Motion on Passengers' Comfort Ratings and Response Times

1980 ◽  
Vol 50 (1) ◽  
pp. 91-97 ◽  
Author(s):  
Edward J. Rinalducci
Keyword(s):  
Reaction Time ◽  
Field Study ◽  
Ride Comfort ◽  
Response Times ◽  
Laboratory Data ◽  
Large Body ◽  
General Purpose ◽  
Human Reaction ◽  
Aircraft Motion ◽  
Human Reaction Time

Comfort ratings and response times for changes in the experienced level of comfort were examined in 20 subjects using the NASA Flight Research Center's Jetstar aircraft modified to carry the GPAS system (General Purpose Airborne Simulator). Data were obtained for each of the subjects during two runs of 10 1-min. flight segments. In general, as the magnitude of aircraft motion increased in either the vertical or transverse (lateral) directions, there was an increase in feelings of discomfort and a decrease in response times to those changes. These results suggest parallels between the large body of laboratory data on human reaction time and that collected in this field study on response times to changes in ride comfort.

A model of human reaction time to dangerous robot arm movements

1988 ◽  
Vol 19 (4) ◽  
pp. 337-338
Author(s):  
M.G. Helander ◽  
M.H. Karwan ◽  
J. Etherton
Keyword(s):  
Reaction Time ◽  
Arm Movements ◽  
Robot Arm ◽  
Human Reaction ◽  
Human Reaction Time

A Model of Human Reaction Time to Dangerous Robot Arm Movements

1987 ◽  
Vol 31 (2) ◽  
pp. 191-195 ◽  
Author(s):  
Martin G. Helander ◽  
Mark H. Karwan ◽  
John Etherton
Keyword(s):  
Decision Making ◽  
Reaction Time ◽  
Motor Response ◽  
Arm Movements ◽  
Robot Arm ◽  
Total Reaction ◽  
Human Reaction ◽  
Arm Motion ◽  
Human Reaction Time ◽  
Total Reaction Time

An increasing number of studies indicate that robots are the most hazardous equipment in industry. The very virtue that makes them attractive for industrial work, the programmable arm, is the cause of accidents since the arm motion is often difficult to perceive. The present paper presents a model of human reaction time and emergency behavior. The total reaction time is the sum of three elements: perception, decision making and motor response. Each of these three elements are modeled using concepts such as perceptual discriminability and single detection theory. Finally the results of an experiment is presented where the human reaction time is modeled as a function of robot arm speed.

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