http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Legibility of freeway Lane Control Signals
750-950 feet, 800-1000 feet, and 1200-1400 feet respectively.
analyzed for their compliance with the MUTCD guidelines.
application of LCS to freeway traffic management.
attempt was made to correlate the difference in legibility to
be understood by a majority of the drivers). For this,
better understanding and utilization of LCS systems and will
catches the attention of a driver in a limited time of
characteristics that have a direct bearing on the legibility
depth study of the interrelationships between the LCS
designed to evaluate and compare the glance legibility
determinant than the color of the display. Significant
differences exist between the color versus symbol recognition
displayed by the two signs was found to be in the ranges of
displays were found to exist between the younger and the
displays, color combinations etc), geometric features and
distance of commercially available freeway Lane Control
distances of the symbols displayed by the two signals were
distances. The signal displays were visible but not legible.
driver; however, significant differences in legibility of
Effectiveness (MOE). It is the distance at which the sign
evaluated was the sensitivity of glance legibility to the
exposure. The glance legibility was evaluated and compared
Fiberoptics, Inc. This study emphasized the visibility of the
for the corresponding symbols displayed by the two signs. An
freeway-lane-control-signing applications. The LCS used in
gender and age of the subject. The glance legibility
glance legibility distance was used as a Measure of
Glance legibility of "Red X", "Yellow X", and "Green Arrow"
hardware elements (e.g. the light intensities, symbol
limitations so as to promote more uniformity in the
of freeway LCS . In summary, there is a need to make an in-
of the displays. Brightness of the sign is a greater
older age groups. The results of this study will lead to a
operation of LCS systems in the most cost effective manner
pixel arrangement were found to be the main design
possible; however, further research needs to be done as
promote more uniformity in the design, installation, and
recognized) rather than their comprehension (their ability to
regards the factors contributing to the effective visibility
Signals (LCS). Two prototype fiber-optic lane control
signals were evaluated to determine their suitability for
standard LCS displays (their ability to be detected and
the differences in sign design characteristics. Also
The glance legibility does not depend upon the gender of the
The size of the sign, brightness of the display, and the
the study were obtained from C.J. Hood, Inc., and Electro
This thesis documents the results of a laboratory study
traffic conditions, mounting characteristics, and driver