The following links provide pdf files with maps* showing the Road Weather Information System (RWIS) stations available from MADIS, along with the locations of NOAA stations near the highways.
[Note that several RWIS networks have been added since these maps were produced in June of 2005.]
AK
CA
CO
FL
IA
ID
IN
KS
MN
MT
NV
OR
UT
WA
WI
WY
*Special thanks to the NWS Management Information Retrieval System (MIRS) GIS group for producing the maps.