<s>
The	O
advanced	B-Application
transportation	I-Application
controller	I-Application
(	O
ATC	O
)	O
is	O
a	O
standardization	O
effort	O
being	O
undertaken	O
by	O
the	O
United	O
States	O
Department	O
of	O
Transportation	O
as	O
part	O
of	O
their	O
Intelligent	O
transportation	O
system	O
(	O
ITS	O
)	O
efforts	O
.	O
</s>
<s>
The	O
ATC	O
standard	O
specifies	O
a	O
wide	O
variety	O
of	O
hardware	O
,	O
the	O
Linux	B-Application
operating	I-Application
system	I-Application
,	O
and	O
a	O
defined	O
API	O
layer	O
.	O
</s>
