I'm pretty sure that's illegal. I don't think it would be smart to carry a weapon either. You wouldn't have much of a chance to use it with your back to your passenger and if you are caught with a weapon you will be in deep **** and will probably lose your license.

weapons as self defence against physical attacks or any violant attacks against cab drivers on job . Who is saying carry weapon to use against innocent or regular passengers?

using weapons to kill innocent doesn't only mean losing license, it means losing life in jail.

So, no need to give me those advice.

Well in that case, maybe everyone should carry guns all the time. Is that pretty much what you're saying?