GA SMT FOLLOWED WRONG TXWY ENTERED RWY WITHOUT CLRNC.

Narrative

AFTER XING RWY 28 ON TXWY E; WE WERE GIVEN INSTRUCTIONS TO TURN RIGHT AND TAKE THE OUTER TXWY TO HOLD SHORT OF TXWY C. I TOLD THE OTHER PLT TO TURN RIGHT AND TAKE THE OUTER TXWY TO CHARLIE. I GOT OUT THE TXWY CHART TO LOCATE CHARLIE; AND AFTER LOOKING DOWN AT THE CHART AND FINDING IT; I LOOKED UP AND THE OTHER PLT SAID 'THIS DOESN'T LOOK RIGHT;' AND STOPPED. AT THE SAME TIME THE GND CTLR CONTACTED US AND TOLD US TO HOLD OUR POS. THEN I SAW THE YELLOW TAXI LINE AHEAD MERGING WITH THE WHITE RWY CENTERLINE AND REALIZED WHAT HAD HAPPENED; AND NOTICED WE WERE ABOUT 10' BEYOND THE WHITE RWY SIDE BOUNDARY LINE. THEN THE CTLR ASKED US TO MAKE A 180 DEG TURN BACK TO THE OUTER TXWY. WHILE TAXIING IN TO THE RAMP HE REQUESTED THAT I CALL THE TWR. WHEN I CALLED THE CTLR ON THE PHONE; HE TOLD ME THAT WE DIDN'T CAUSE ANY PROBS BECAUSE RWY 22 WASN'T ACTIVE; BUT HE WANTED TO KNOW WHY WE TAXIED ONTO A RWY W/O A CLRNC. HE SAID THAT THEY HAVE HAD MANY OTHER ACFT MAKE THE SAME MISTAKE AT THE SAME INTXN; AND HE WANTED TO KNOW IF I HAD ANY SUGGESTIONS THAT COULD HELP PREVENT THIS FROM HAPPENING. HE SAID THAT THEY HAD DOUBLED THE WIDTH OF THE HOLD BARS AND INSTALLED NEW RWY SIGNS. I TOLD HIM THAT THERE WERE PROBABLY SEVERAL FACTORS THAT CONTRIBUTED TO IT. I THINK THAT IF I HAD THE TAXI CHART OUT WHEN WE LANDED AND HAD THE OTHER PLT STOP FOR A FEW SECS WHILE WE LOOKED AT IT BEFORE WE TAXIED; THIS WOULD NOT HAVE HAPPENED. I THINK THAT I SHOULD HAVE SUPERVISED THE OTHER PLT BETTER SINCE HE WAS UNFAMILIAR WITH THE ARPT. I THINK THAT THE MAJOR CAUSE FOR CONFUSION CAME FROM THE LABELING AND MARKING OF THE TXWYS. WHEN ENTERING THE OUTER TXWY FROM TXWY E; AT FIRST GLANCE IT APPEARS TO SPLIT INTO 2 TXWYS. THE TXWY ON THE LEFT IS THE OUTER (EVEN THOUGH IT IS THE ONE CLOSEST TO THE TERMINAL RAMP) AND THE ONE ON THE RIGHT IS A HIGH SPD OFF OF RWY 22. LOOKING AT IT CLOSELY A SECOND TIME; IT WAS OBVIOUS THAT THE RIGHT TXWY LEADS TO A RWY BECAUSE OF THE HOLD BARS. THE OTHER PLT TOLD ME HE MISSED THEM BECAUSE HE WAS LOOKING BEYOND THEM FOR THE TXWY C SIGN. THE INNER TXWY IS NOT VISIBLE TO SMALL AIRPLANES FROM THAT AREA BECAUSE IT IS ON THE TERMINAL RAMP BEHIND THE FIRE STATION. I THINK IT MIGHT HELP IF THEY COULD RELABEL THE TXWYS. INSTEAD OF CALLING IT AN INNER TXWY; I THINK IT MIGHT HELP IF IT WAS CALLED A TERMINAL RAMP TXWY. ONE LAST THING THAT I THINK MAY HAVE BEEN A CONTRIBUTING FACTOR IS FATIGUE. WE BOTH WORKED 21 OF THE LAST 23 DAYS AND PROBABLY WERE ON SEMI-AUTOMATIC. IT WOULD BE NICE TO HAVE DUTY TIME REGS THAT COVERED PART 91 OF THE FAR'S SINCE MANY OPERATORS AREN'T CONCERNED WITH THIS. I APPRECIATE THE FACT THAT THE BWI TWR ACTED IN A PROFESSIONAL AND UNDERSTANDING MANNER; AND SHOWED ME THAT THEIR FIRST PRIORITY IS ACFT SAFETY. I HOPE THIS LETTER WILL HELP TO KEEP OTHER PLTS FROM DOING THE SAME THING.