That turns out to not be the case... It has been 4 years since I worked in telecom, but at the beginning of 2002, I know that location accuracy without GPS enables was close to 100 meters, and much closer, if you have a GPS enabled phone.
/johnny
They'd also be able to track your direction if you were moving while talking and roaming from one tower to the next.
In any case, if "they" had to go to all that trouble to find you, then you probably deserve to be caught and tossed in jail anyways.