<s>
A	O
vane	B-General_Concept
display	I-General_Concept
is	O
a	O
type	O
of	O
7-segment	B-General_Concept
display	I-General_Concept
.	O
</s>
<s>
Unlike	O
LED	O
and	O
VFD	B-General_Concept
segmented	O
displays	O
,	O
vane	B-General_Concept
displays	I-General_Concept
are	O
composed	O
of	O
seven	O
physical	O
surfaces	O
(	O
vanes	O
)	O
,	O
typically	O
painted	O
white	O
,	O
but	O
occasionally	O
other	O
colors	O
,	O
such	O
as	O
yellow	O
or	O
fluorescent	O
green	O
.	O
</s>
<s>
Vane	B-General_Concept
displays	I-General_Concept
operate	O
in	O
a	O
similar	O
manner	O
to	O
flip-disc	O
displays	O
,	O
in	O
that	O
the	O
segments	O
are	O
quickly	O
moved	O
using	O
electromagnets	O
.	O
</s>
<s>
Vane	B-General_Concept
displays	I-General_Concept
have	O
been	O
used	O
in	O
game	O
shows	O
and	O
on	O
scoreboards	O
in	O
sports	O
arenas	O
and	O
stadiums	O
.	O
</s>
<s>
Another	O
benefit	O
of	O
the	O
vane	B-General_Concept
display	I-General_Concept
is	O
that	O
if	O
the	O
power	O
supply	O
is	O
lost	O
,	O
the	O
display	O
will	O
continue	O
to	O
show	O
whatever	O
the	O
last	O
value	O
was	O
before	O
power	O
was	O
cut	O
.	O
</s>
<s>
American	O
and	O
Canadian	O
game	O
shows	O
have	O
used	O
vane	B-General_Concept
displays	I-General_Concept
to	O
display	O
contestants	O
 '	O
scores	O
or	O
for	O
countdown	O
clocks	O
.	O
</s>
<s>
The	O
Oklahoma	O
Turnpike	O
Authority	O
has	O
used	O
vane	B-General_Concept
displays	I-General_Concept
on	O
several	O
of	O
their	O
automatic	O
toll	O
collection	O
baskets	O
to	O
display	O
the	O
toll	O
due	O
.	O
</s>
<s>
The	O
New	O
Jersey	O
Turnpike	O
previously	O
used	O
vane	B-General_Concept
displays	I-General_Concept
for	O
all	O
roadway	O
speed	B-Application
limit	I-Application
signs	O
;	O
it	O
was	O
not	O
uncommon	O
to	O
see	O
them	O
blank	O
;	O
VMS	O
sign	O
replacements	O
now	O
use	O
a	O
new	O
electronic	O
speed	B-Application
limit	I-Application
sign	O
.	O
</s>
<s>
Various	O
other	O
locations	O
with	O
variable	O
speed	B-Application
limits	I-Application
also	O
employ	O
either	O
this	O
or	O
eggcrate	O
,	O
flip-disc	O
,	O
or	O
LED	O
displays	O
to	O
display	O
the	O
current	O
speed	B-Application
limit	I-Application
for	O
the	O
area	O
.	O
</s>
