FLC CLRS RWY ON TO ANOTHER RWY RATHER THAN A TXWY WITHOUT GAINING TWR APPROVAL.

Narrative

UPON LNDG ON RWY 06 AT KBDR I TURNED OFF ON RWY 29 (L TURN) INSTEAD OF USING A PROPER TXWY. THE PROB AROSE BECAUSE; THIS WAS THE SECOND TEST FLT OF THE DAY AND ON THE FIRST TEST FLT THE LCL CTLR GAVE US THE DIRECTIONS TO TURN ONTO RWY 29 AFTER LNDG ON RWY 06. I WAS NOT THE PF THE FIRST FLT. UPON LNDG THE SECOND TIME I ASSUMED TO DO THE SAME PROC. THE CTLRS HAD CHANGED SHIFTS; AND THE LCL CTLR DID NOT KNOW WHAT HAD TAKEN PLACE EARLIER. THE LCL CTLR ASKED THAT I CALL THE TWR WHICH I DID AND WE DISCUSSED THE PROB. I BELIEVE IT WAS MY ERROR BECAUSE I ASSUMED A PROC THAT IS NOT THE NORMAL WAY THINGS ARE DONE. MY COPLT ALSO RATED IN THE ACFT DID NOT BRING IT TO MY ATTN THAT WE SHOULD NOT TAXI ON THE XING RWY. WE HAD A PLANE LOAD OF PAX WHO WERE JUST GOING FOR A RIDE FOR FUN. SOME PAX WERE AIR SICK AND I WAS CONCERNED WITH THEM INSTEAD OF WHAT I WAS SUPPOSED TO BE PAYING ATTN TO AND THAT WAS FLYING THE ACFT. MY COPLT WAS ALSO IN THE SAME MENTAL STATE AT THE TIME. I THINK WE BOTH LOST SIGHT OF WHAT WAS GOING ON AND FOCUSED OUR ATTN IN THE WRONG DIRECTION.