Steve Wright asked an interesting question years ago. If you’re in a car traveling at the speed of light and you turn the headlights on, what happens?
You’re blinded by the light.
If the car is traveling (just less than) the speed of light:
The headlights look normal to you driving the car. The car and light from the headlights appear frozen to everyone else ( this would actually happen if the car were entering a black hole, just before the event horizon - observers would see the car stalled at the EV, “never” actually entering).