>I've driven across the country more than once. There are no signs!!

I don't recall any time-only signs, but I vaguely recollect "Welcome To" type of signs with mention of time zone...but you're right, mostly you're on your own to find out.

>Most of the time zones here in the USA are done by state lines where
>possible. But there are exceptions. There is one small town in
>Indiana that refuses to accept summer daylight time. There is another
>small town in Texas that chnages the time two hours in order to take advantage of the added light.

Indiana's almost all year-round EST -- check out the link in one of my other posts, all the quaint details of Indiana-time are there :)