00933721

Component

https://doi.org/10.3141/1803-13

http://scholar.google.com...lman&publication_year=2002

Results of human factors laboratory studies conducted in Texas pertaining to the display of messages using the following dynamic characteristics of changeable message signs (CMSs) are presented: (a) the effect of flashing an entire one-frame message, (b) the effect of flashing one line of a one-frame message; and (c) the effect of alternating text on one line of a three-line CMS while keeping the other two lines of text the same. Two hundred sixty Texas drivers were recruited in Dallas, El Paso, Fort Worth, Houston, and San Antonio to participate in the laboratory studies designed to simulate these CMS characteristics on laptop computers. The drivers responded to questions designed to determine the level of recall and comprehension of the information contained in the message. Response times, message format, and sign operating preferences were also collected. The results showed that in the laboratory setting, flashing a one-frame message did not adversely affect driver recall or comprehension to a significant degree compared with when the message was not flashed. However, average reading times were significantly higher when the message was flashed. Flashing one line of a three-line message appeared to adversely affect recall of parts of the message. In addition, average reading times were significantly higher for the flashing line message. Alternating one line of text and keeping the other two lines constant did not adversely affect message recall. However, average reading times increased significantly.

This paper appears in Transportation Research Record No. 1803, Human Performance: Models, Intelligent Vehicle Initiative, Traveler Advisory and Information Systems.

English

p. 94-101

2002

Transportation Research Record

0309077281

References (2) ; Tables (12)

Comprehension; Human factors; Laboratory studies; Memory; Messages (Communications); Reaction time; Reading; Variable message signs

Flashing lines; Flashing messages

Texas

Highways; Operations and Traffic Management; Safety and Human Factors; I73: Traffic Control

TRIS, TRB, ATRI

Nov 13 2002 12:00AM

• COMPARISON OF DRIVER BRAKING RESPONSES IN A HIGH-FIDELITY SIMULATOR AND ON A TEST TRACK
• DATA-CONSISTENT FUZZY APPROACH FOR ONLINE DRIVER BEHAVIOR UNDER INFORMATION PROVISION
• DRIVERS' UNDERSTANDING OF OVERHEAD FREEWAY EXIT GUIDE SIGNS: EVALUATION OF ALTERNATIVES WITH AN ADVANCED FIXED-BASE DRIVING SIMULATOR
• EFFECT OF WARNING TIMING ON COLLISION AVOIDANCE BEHAVIOR IN A STATIONARY LEAD VEHICLE SCENARIO
• EFFECTS OF MEMORY RETRIEVAL LOAD ON DRIVERS' REPRODUCTION PERFORMANCE UNDER ROUTE SEARCHING
• EVALUATION OF THE ACCURACY OF A REAL-TIME TRAVEL TIME PREDICTION SYSTEM IN A FREEWAY CONSTRUCTION WORK ZONE
• INVESTIGATION OF BEHAVIORAL ADAPTATION TO LANE DEPARTURE WARNINGS
• MODELING THE DYNAMIC CUT-IN SITUATION
• MODIFICATION AND PARTIAL VALIDATION OF THE DRIVER/VEHICLE MODULE
• ON-ROAD VERSUS SIMULATOR DATA IN DRIVER MODEL DEVELOPMENT: DRIVER PERFORMANCE MODEL EXPERIENCE
• SEEKING A REDUCTION IN AGGRESSIVE DRIVING THROUGH DIFFERENT STRATEGIES
• TRAVELER RESPONSE TO NEW DYNAMIC INFORMATION SOURCES: ANALYZING CORRIDOR AND AREAWIDE BEHAVIORAL SURVEYS
• WORK- AND SLEEP-RELATED PREDICTORS OF SUBJECTIVE ON-DUTY ALERTNESS IN IRREGULAR WORK SCHEDULES