I've been loaned out to other buildings and worked in some pretty ghetto areas of Los Angeles and those drivers mostly told me they carry knives/pocket knives for self protection. I'm not sure what the policy is regarding that. I've been thinking of carrying one of my smaller pocket knives in my backpack while I'm out on route. I don't generally deliver in any dangerous areas, but I'd sure like the peace of mind. Any input would be appreciated!