Narrative:

Location: ord. After landing on runway 14L ord during low visibility and snow, we were told to exit at runway 36 and left on taxiway P. By this time, we were already past the runway 22R-4L runway sign or the sign was covered with snow. Anyway, I turned off at the first available runway which I assumed to be runway 36 because taxiway P was right there, in sight, and I thought I had already passed runway 22R. Slowing and preventing skidding during turns was my main concern at this time. The runway I exited onto was runway 4L, an active departure runway.

Google
 

Original NASA ASRS Text

Title: FLC OF AN FK10 EXITED THE RWY AFTER LNDG ONTO AN ACTIVE RWY DUE TO LOW VISIBILITY IN SNOW. SOME RWY SIGNS HAD ALREADY BEEN COVERED WITH SNOW.

Narrative: LOCATION: ORD. AFTER LNDG ON RWY 14L ORD DURING LOW VISIBILITY AND SNOW, WE WERE TOLD TO EXIT AT RWY 36 AND L ON TXWY P. BY THIS TIME, WE WERE ALREADY PAST THE RWY 22R-4L RWY SIGN OR THE SIGN WAS COVERED WITH SNOW. ANYWAY, I TURNED OFF AT THE FIRST AVAILABLE RWY WHICH I ASSUMED TO BE RWY 36 BECAUSE TXWY P WAS RIGHT THERE, IN SIGHT, AND I THOUGHT I HAD ALREADY PASSED RWY 22R. SLOWING AND PREVENTING SKIDDING DURING TURNS WAS MY MAIN CONCERN AT THIS TIME. THE RWY I EXITED ONTO WAS RWY 4L, AN ACTIVE DEP RWY.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.