How long would it take for the single operator to reach a stuck car, worst case and average? I don’t know how it’s in the US but I’m pretty sure you could never

How long would it take for the single operator to reach a stuck car, worst case and average? I don’t know how it’s in the US but I’m pretty sure you could never get this certified in the EU, you can’t have your cars stuck and blocking traffic for 20 minutes before someone comes to get it unstuck. I think remote control would be much better for this.