[member]

something as simple as this?

pawn Код:

if(!strcmp(cmdtext, "/pullover", true, 9))
    {
        if(GetPlayerTeam(playerid) != 9) return SendClientMessage(playerid, 0x00E100FF, "You need to be a cop to do that!");
        new string[128];
        new adminname[MAX_PLAYER_NAME];
        GetPlayerName(playerid,adminname,sizeof(adminname));
        format(string, sizeof(string),"**Officer %s says Pull Over Now!",adminname);
        SendClientMessageToAll(0x00E100FF, string);
        return 1;
    }

That will just send all the players in your server a message saying "Officer [Your name] says Pull Over Now!".

You can make it more advance such as /pullover [id/part of name] or pullover players next to you.