Lyft says absolutely "no weapons", but isn't that a bit vague? Can I bring a Swiss Army Knife?

Lyft's help site says this:

At a minimum, a "weapon" includes any form of firearm. There are many items that could be considered weapons besides firearms, such as handguns, stun guns, explosives, knives, sling shots and tasers. Lyft reserves sole judgment on what else may constitute a "weapon."  If you have any questions about whether various items could be considered a "weapon" under this policy, please contact Lyft Support before bringing any questionable items onto Lyft property. 

https://help.lyft.com/hc/en-us/articles/115012923127#weapons

So, basically anything.

My car is my property.  Inside it is a private property. You have no say in what I can have, and please leave me alone.

Some woman got deactivated because of this.  

See?  problem #1.  Lyft cannot enforce people carrying it.  Riders nor drivers. 

Problem #2? The drivers have to defend themselves.

i just posted this;

https://ride.guru/lounge/p/how-else-do-i-defend-myself-female-lyft-driver-slams-the-car-company-for-deactivating-her-account-after-she-threatened-a-passenger-with-mace-when-he-masturbated-in-her-car

The reason it's under their "community guidelines" because it isn't legal for them to enfore this rule on the drivers and potentially riders.  The drivers are independent contractors in their own vehicles, and they should be able to carry whatever they like and what the law allows.  

Of course, Lyft can make up any rules they want and they can enforce it by deactivating the offenders.  

Carrying a Swiss Army knife is definitely illegal.  I think you would be okay.