When did it become the norm to not pull your vehicle over, exit the vehicle, and render proper courtesy when Retreat is played?

I would have added To The Colors in the question but ran our of room. I have been stationed for nearly 12 years on Fort Bragg in my career. It was ingrained in my head that when Retreat and To The Colors are played when you are driving, you pull over, get out, and salute in uniform/place your hand on your heart if in civilian attire. Recently, I did this and was astonished by how many vehicles were still driving while the songs were played. It was for lack of hearing the music because there's umpteen speakers all around post.