RWY INCURSION ON TAXI.

Narrative

FROM GATE CIRCLE; I WAS CLRED TO RWY 21L VIA INNER; OSCAR 4; VICTOR AND WHISKEY. I KNEW WHERE THE INNER WAS AND THE APPROX LOCATION OF OSCAR 4 SO I BEGAN TAXIING. MY COPLT HAD THE ARPT PLATE IN HIS HAND TO ASSIST ME. AT OSCAR 4 I SAW VICTOR BUT I THOUGHT IT WAS THE PARALLEL TO RWY 21C SO I TURNED L AND BEGAN LOOKING FOR WHISKEY. AT PAPA I REALIZED THAT I MIGHT HAVE MISSED OR MISINTERPRETED THE SIGNS. I STOPPED AND ASKED GND CTL FOR HELP. AT THAT TIME THE COPLT; WHO WAS RECHKING THE PAGE; AFTER READING CHKLIST; IDENTED MY ERROR. BEING AWARE OF THE DETROIT TRAGEDIES; I WAS CONSCIENTIOUS AND ALERT. MY ERROR COULD POSSIBLY BE THE RESULT OF SIGN PLACEMENT. IF I AM NOT SURE OF THE ENTIRE TAXI RTE; I SHALL REVIEW THE ARPT PLATE PERSONALLY. I AM DISAPPOINTED IN GND CTL; WHO I RESPECT FOR ASSISTANCE AND CTL -- DID NOT CALL ME ON MY ERROR. ALTHOUGH I HAD THE WHOLE ARPT ALL TO MYSELF; I MUST WAIT ANOTHER 6 MONTHS TO A YR BEFORE I GET AN OPPORTUNITY TO SEE THE SAME CLRNC IN ORDER TO PERSONALLY IDENT MY MISTAKE AND DECIDE WHY I WAS CONFUSED.