Communication is key to the relationship
I am a wife of a trucker! The key thing is to communicate everyday that he is gone.
He calls me before he hits the road and before he goes to bed...It's hard yes, but the key thing for us is communication...and don't let your husband say he can't call you at least once a day, because they have to shut down for sleep and food and usually there's a thing called a 10 hr. restart or break.
So remember to communicate that way you both know what's going on, on both sides. Also, if you have kids together like we do, even if they are babies like mine, let their daddy's voice be heard by them as well to show that they are loved and missed too!!!