The Washington times. [volume] (Washington [D.C.]) 1902-1939, 1928-08-08

, black letters; stop, yellow with red
letters; slow yellow with black
letters: caution, yellow With black
letters: 0ne-Way and detour, white
with black letters; direction and in
formation, white with black letters:
restriction, no parking. orange with
white letters; restriction. limited
parking, green with white letters.
The stop sign color combination
Is reeomlne ended as a practical com.
promise between the twO-color
schemes which have been in general
use. yellow with black letters or red
with white letters, recommended ~.
spectively, BY the joint board on
interstate highways and the traffic
signal color code committee.
The new recommended color COM
bination continues the use Of the
established yellow background, blat
recognizes the accepted meaning at
tached to the color red By sub.
stftuting It for the color black for
the word stop. This has par.
ticular valls wherever the word ii
Illuminated from behind OF IS made
q rejecting material
The specified word arrange
nlents OF signs should be used with.
out variation because standarcIfza.
ton Is Of the highest Importance IN
this feature, the report maintains
The workings have been developed
with the objective of using the
feWest possible simple words. 50
arranged as to convey complete
message. Equivalent words may b.
substituted, If the size and arrange
ment are followed.
Illumination Urged
signs should Be illuminated &
AZ 70 be visible at night az well n
IN daylight. Recommended rnefhoda
are: Attached lights flooding the
face Of the sign: transparent letters
Illuminated from the rear: reflex
glass letters illuminated BY head.
lights Of vehicles: placement So a.
70 be Illuminated Nv street lighfe.
u signs should be maintained
continuously in good order and
Clear legibiIity by cleaning when.
ever necessary. repaintine when.
ever required. and prompt replace.
ment when broken OF detective
All signs should be located AZ
nearly as possible at the poinf
where the message is to be obeyed.
giving due regard to the character
of the message. whether it Ii I
warning Of hazards which the
vehicle Il approaching or whether
y - an order which Is to 81
oDeyed ct 9 particular place.
Approved Height
The suggested heights for sis.na
are eight feet above pavement 81,
fixed posts set in the sidewalk a
least II inches back from the curb
and four feet above pavement ~
movable posts when used in the
roadway.
In cases where signs are equip
pea with rejecting elements for
illumination by approaching We
nicies. care should be taken that
the sign be so placed az to appear
Illuminated to the driver OF the
All signs except those Of the
direction and restriction grouns are
70 be located so that they are withir
the unobstructed view Of an an.
preaching driver and in ordar -
prevent them from being ohsc,,red
by standing vehicles. re1uIatio,,
be enacted and enforced. Iin,itiro
the parking Of vehicles near inter.
sections"
The councils main committee
was aided by local committees n
the cities studied. The survey was
carried on in cooperation with the
American Engineering standards
Committee. the National Conference
on Street and Highway Safety. the
Q. 8. Bureau of Standards. the Ma.
tional Safety Council, the America
association of State Highway Off.
cials, and other orga nizations.