So what happens if a headlight or turn signal goes out while you're in the middle of your drive? Do you immediately pull over and call a tow to avoid having a o

So what happens if a headlight or turn signal goes out while you're in the middle of your drive? Do you immediately pull over and call a tow to avoid having a officer pull you over and slap you with a 1k ticket because your light bulb decided to go bad right then? What about if a rear break light goes out, only way to usually know about those ones is if someone alerts you to it.