In cases of a cop chase you have the advantage as cop that you don't have to release the gas to do /m2 , /m3 etc. or just your own text by /m
You can just press 2 keys and you got it.
And it has been said that it can be that some players will do /s2 (or whatever) by keybind and shoot the suspect fast, he wouldn't have even a chance to stop and /gu , they will say then something like "I said he must give up." " He didn't stopped so I shot him, I warned him ", well but the suspect should know by his self he has to stop, otherwise there will be shots fired on him.