Am a truck driver is it legal to carry in a semi truck / tractor trailer
Hi @Dennis74.
Welcome to the Community.
To find the correct answer we need to know at least the State you are living in.
You can also make your own research here:
https://www.usconcealedcarry.com/resources/ccw_reciprocity_map/
Hopefully some wise lawman jumps here with more info.
There’s no fmcsa or federal regulations against it however it’s up to your carrier (unless you’re an owner operator) and state reciprocity will be a concern
If you’re not joined up with uscca it would be a good idea…they’re reciprocity aids are pretty handy and easy to use
Welcome to the family Dennis nice to have you.
Most likely have company policy against it. But what they don’t know won’t hurt. Lol. But seriously I drive truck and usually carry 2 with me. Just know what the laws are in each state and roll on.
Side note… obviously can’t carry in Canada but a marine flare gun is a perfectly legal safety devise in all 50 and canada… 
Thank you I only runs in states that honors my permit