Ok, I feel compelled to reply to this post. I do not currently drive any of our trucks, but here are some of the facts.
Your carrier is the only authority that prohibits you from carrying a firearm for protection in your truck. There are NO DOT or other Federal regulations to prohibit this. Actually there is a Federal Law to Protect you! It is called Peaceable Journey (Google It)
Now what that said, if you have your CHL (Concealed Handgun License) you can travel with said firearm loaded in your vehicle and any other state which honors your CHL. Before entering a state which does NOT honor your CHL you must follow the laws of that state, which are usually along the lines of Handgun must be Unloaded and secured in a closed container separate from the ammunition. This goes for the magazine also in some states.
If you are concerned about those states which do not honor your CHL you CAN hold CHL's in multiple states. I currently hold a CHL in Ohio and Pennsylvania and I am going next month to get my Utah. What this accomplishes is I will have 90% of the country covered. My CHL's will not be good in the New England States, Illinois, California, or Oregon. But I am covered by the rest of them.
As far as this Fedex driver who was arrested in New York... the entire story is obviously not reported. If that driver had his firearm loaded while in New York without the appropriate CHL then he was indeed illegal. If the firearm was secured properly according to state law... then he has one hell of a law suite.
Other considerations - I did say above that the carrier was your only authority prohibiting carry, but I failed to mention shippers and consignee's. Their grounds may be posted. If you enter a shipper or consignee with your firearm and you are found out... your guilty of criminal trespass at most (in the state of Ohio)
People can beat this dead horse all they want. But the facts are it is NOT illegal go carry a firearm in your vehicle if done so correctly. Just because your carrier says No Guns does not make it Illegal or Criminal in any way. Just means that if you are found out they can and probably will disqualify your vehicle from their fleet.
Now onto my personal opinion...... Carriers and Employers who infringe on their staffs ability to protect themselves is absurd! In the state of Ohio at least, Employers are protected against the actions of their employee's who use a firearm in self defense while in or on their property. There is little reason for an employer to deny an employee who has at the bare minimum a CHL from carrying their firearm while on duty.
No a firearm does not guarantee your safety, but just as the old saying goes, Colt made us all equal. The only thing to improve your survivability in a firearm situation is through proper training. Train a lot, train hard, stay alive.
For any Ohio folks here (I hope I'm not breaking any TOS) but for more information please visit the forums at OhioCCW.org
For anyone who wants to know all relevant laws of any state in which they live or may pass through please visit Handgunlaw.us
Your best defense is knowledge! Know the laws, carry a voice recorder, stay safe!
But officer I forgot all about that thing. 
