Your radio should play the start tones from the old "Pole Position" arcade game when the light is turning green. Boop...Boop...Beeeeeee
Just allow texting at redlights. Sure it's annoying, but not dangerous. People aren't going to stop texting, so encourage doing it in a safer manner rather than the less likely to get caught but more dangerous manner. It's a reasonable compromise.
Annoying, but not dangerous. The texting law is supposed to save lives, not as a revenue generator.