Blitzer in construction site in case of an emergency?

Hello, I have a rather unusual question. And no, it didn’t happen to me or anything like that, it’s just something I’ve been interested in for a long time. I hope I’m reasonably in the right forum here, it seemed to me to be the most accurate one. So, to my question: Imagine the highway is quite empty and you drive into a single-lane construction site, which is bordered by these concrete things to the right and left, so no evasiveness is possible. And now one more step higher: Imagine, from behind comes the police / ambulance / fire department with blue light and siren. How would you behave there? In an 80s construction site continue to drive his 80 or step on the gas to for example not to hinder rescue work? And if I get flashed there, then is that superfluous or want your money. Yes, I know that the question is already a bit skurile… But every time I get through I wonder what I would have to do if the unlikely case comes and a blue light car with siren comes from behind. Or a little easier: If behind me there is a police force in action and just wouldn’t get past me. Thanks already for answering this question – And YES, I mean the question seriously!