A quote from one of the cases:
1994: http://www.cs.cmu.edu/afs/cs/usr/wbardw ... _state.txt" onclick="window.open(this.href);return false;The "traveler" exception in the statute has been described as "one of the most enigmatic provisions of the prior weapons offense."
From 1982: http://www.cs.cmu.edu/afs/cs/usr/wbardw ... _state.txt" onclick="window.open(this.href);return false;Matocha vs. State of Texas
In this case a Texas appeals court reverses a conviction for carrying a concealed weapon, where the trial judge refused to instruct the jury on the defense of being a "traveler". The court rejects the argument that a trip must be at least overnight to bring a person within the defense. The court states that it was up to the jury to decide if the defendant, who carried a pistol with him while on his job as a repairman, who traveled through several counties, and for fairly long distances, on his job.
From 1966: http://www.cs.cmu.edu/afs/cs/usr/wbardw ... _state.txt" onclick="window.open(this.href);return false;Smith vs State of Texas
In this case construing the meaning of "traveler" in the Texas statute permitting travelers to carry handguns on their person, the court decides that the defendant was not a traveler. He had taken his pistol with him when he went fishing, and then came back to town to go to work. While leaving work, to go to his girlfriend's house, he was stopped and the gun was discovered still in the passenger compartment of his car.
From 1898: http://www.cs.cmu.edu/afs/cs/usr/wbardw ... _state.txt" onclick="window.open(this.href);return false;Kyles vs. State of Texas
In this brief case, the Texas appeal court upholds a trial court decision finding the defendant was not a "traveler" permitted to carry handguns in his car. He had traveled from North Carolina to Texas with some guns, as part of some attempt to reconcile with his estranged wife. The court decided that as he was found with the guns well after arriving at his wife's home in Dallas, he was no longer on a trip that would make him a traveler within the statute.
The list of all the state cases he has gathered is here: http://www.cs.cmu.edu/afs/cs/usr/wbardw ... cases.html" onclick="window.open(this.href);return false;Bain vs State of Texas
In this 1898 case, the Texas court decides that a person going a distance of 35 miles, and staying overnight, is a "traveler" under a statute permitting travelers to carry firearms on their person. The court notes that traveler is not defined by the statute, and while they will not construe it be any person going from one place to another, given that the legislature decided not define it, they will call the trip in this case sufficient to make the defendant a "traveler".
There are some interesting ones. If you prowl the site, he has similar list of SCOTUS cases.