Advance warning signals are installed upstream of high-speed signalized intersections to warn motorists of impending signal changes. A new advance warning signal design was tested on an approach to a high-speed signalized intersection in Utah that utilized a dynamic blank-out sign with flashers mounted over the roadway. A state-of-the-art evaluation system was installed to collect continuous, nonintrusive data of vehicle speeds and red-light running events. Data were collected prior to and immediately after installation. Cumulative distributions of speed profile data showed statistically significant results after blank-out overhead dynamic advance warning signal (BODAWS) installation evidenced by an increase in mean speeds of 5–10 mph during the green interval, while the system was inactive, followed by a decrease in mean speeds of 5–10 mph after activation of the system. The system also reduced red-light running at the site during the time period immediately after BODAWS installation from five violations...
[1]
P T McCoy,et al.
ADVANCE DETECTION ON HIGH-SPEED SIGNALIZED INTERSECTION APPROACHES
,
2002
.
[2]
A Klugman,et al.
A STUDY OF THE USE AND OPERATION OF ADVANCE WARNING FLASHERS AT SIGNALIZED INTERSECTIONS. FINAL REPORT
,
1992
.
[3]
Thomas C Ferrara,et al.
EVALUATION OF HIGH-SPEED ISOLATED SIGNALIZED INTERSECTIONS IN CALIFORNIA (WITH DISCUSSION AND CLOSURE)
,
1992
.
[4]
Bab Farraher,et al.
THE EFFECT OF ADVANCED WARNING FLASHERS ON RED LIGHT RUNNING--A STUDY USING MOTION IMAGING RECORDING SYSTEM TECHNOLOGY AT TRUNK HIGHWAY 169 AND PIONEER TRAIL IN BLOOMINGTON, MINNESOTA
,
1999
.
[5]
X Peter Huang,et al.
SIMULATION-NEURAL NETWORK MODEL FOR EVALUATING DILEMMA ZONE PROBLEMS AT HIGH-SPEED SIGNALIZED INTERSECTIONS
,
1994
.