That's strange, I'm admin on one server and when I'm writing /cansiren tankslacno 1 (I also tried /cansiren 1), it says Unknown Command. When I write /siren=off/fast/slow it says: You can't use a siren
EDIT: Or does that command work only if it affects other users?
EDIT2: I tried to write /cansiren tankslacno 1 via LFS Remote chat, but same thing happened: it says Unknown Command.
So 0.6N just came out and with that, we can use siren on cars with a horn.
However, I have one question about this: why only host has authority to allow/deny siren sound? Why admins don't have that authority as well? (Wait a second, something is wrong: "I have one question about this" - I see two questions )
Anyway, if you ask me, admins should also have authority to allow/deny multiplayer guests to use siren sound on host because I don't see any reason that why only host is allowed to do that. Usually the host is dedicated and contacting him/her can sometimes be a painful process.
At very least, hosts should have a button "Allow admins to allow/deny multiplayer guests to use siren sound?".
1) Start qualifying and add AI-drivers who are driving with MRT, FBM, FOX, FO8 or BF1
2) Wait until the end of lap 4 or 5 when AI-drivers return to pit lane and turn off their engines
3) Hit/Touch them and watch "This car does not have a handbrake"-message flooding on chat
It doesn't matter who hits your AI-drivers. Even somebody else can hit your AI-drivers (as long as AI-drivers have turned off their engines and are using a single-seater as a car) and you still get that message flooding on chat.
"If car starts outside path it will keep searching to find the path"
However, when I tested this with AI and added start position on purpose outside the track (and made that AI filled that start position), this text appeared: