Personally i don't think quiz is necessary, maybe in a form of multiple choice about coprules.
I don't want it to be too hard so it won't be too intimidating for new players to play in this server, i just want it to be a little bit longer not harder for someone to be a cop, so freshly new players that may have never played in other CNR server or new SAMP players in general have time to learn the game and ask around if there are some rules or coprules that they don't understand.
I don't know if it's a feature or not, maybe force a first time cop to read coprules as soon as they register as cops (just the first time they do, not everytime) by adding timer for them to close the rule page so they will actually read it and able to close it when the time is up.
I'm sorry if it's kind of demanding but i just want everyone to have fun by not getting griefed by cops since i saw alot of people in chat were frustrated by cops stealing cars and shooting them when they were innocent or only had 1 star, and i only suggest things that easy to implement but somewhat effective so i won't put lotta weight to the Dev(s).

