Radar jammers are not allowed under federal rule, but laser jammers are not specifically banned. Ten states are specifically banning laser jammers: California, Colorado, Illinois, Minnesota, South Carolina, Oklahoma, Tennessee, Texas, Utah, and Virginia. Radar detectors are not banned in the aforementioned states (Excluding Virginia).
Based on the above text, what's the best answer to this question: is it legal to have a radar detector in texas?
yes