The folks at Scanner Master
carry a "National Highway Patrol Reference Guide" ,
here's a book that deals with highway patrols. It may have
information that your looking for and may supplement other on line
sources.


http://www.scannermaster.com/store/01-680767.html


And they publish several regional frequency guides for:

Chargoland
Philadelphia
DC Delaware Maryland
New York NJ
Also, Massachusetts with New England states are covered!
The have squelch tone code data!




Another frequency book that covers all the states is
"Monitor America" published by Scanner Master
It gives frequencies state by state. The first section in each
listing goes over the state police, their frequencies and
the locations of the different troops. It also has squelch tone code
data
for many agencies! Some trunking information is
listed also mostly with no talk groups.

In any of the source you look at they may still list VHF low band,
VHF High band and UHF conventional frequencies along with 800/900 MHz
trunking frequencies and system information. If a state has trunking
there
may be little or now activity on the conventional frequencies.

Another aspect of traveling around the interstate system here in america

are laws banning police radio scanners,
check your state(s) he

http://www.afn.org/~afn09444/scanlaws/

If your don't have a separate CB radio transceiver and if your scanner
will cover 27.185 MHz AM then add CH 19 into your scanner!
There are limitations on CB radio traffic and it gets boring. But some
times
you can really get a good traffic report over the CB channel, that just
isn't available any where else!
If you have a portable general coverage short wave radio receiver that
will go up to 27 Megs then
us this in the vehicle to monitor CB CH 19. With either a scanner or
short wave radio you can
listen to "out banders" above and below the 40 channels of a stock CB
radio, around 26.5 MHz and up to 27.5 Mhz

Get a external magnetic mount antenna for ALL your after market radios
DO NOT US a SPLITTER or "T"
connector to run one (1) antenna to a CB tranceiver (or any other
transceiver-transmitter) and a police scanner.
However shareing one (1) antenna with two or more receivers is O. K.
but, you may find they interfere with each other locking
up the scanning with internal oscillations going over the patch co-ax
cable, to the other radio!
jim

BillyThe Squid wrote:

I drive the interstates and I am looking for a site that has the
freqs. used by state police/Highway patrol so I can monitor road
conditions, accidents, etc as I drive. I only need freqs. for the
roads I'm driving. Can anyone help?

Thanks much!