Narrative:

After exiting runway 27L we were assigned taxiway B to gate on concourse. At the intersection of taxiway D and taxiway B, we were to stay on taxiway B. However, due to set txwys and night time lighting, the service road was mistaken for the transition to taxiway B at that intersection. We discovered our error when our path was blocked by lights and signs. We requested entry from our position to taxiway a which ground approved. No taxi lights or signs were struck and the entire surface was concrete. We attribute this error to 4 factors: 1) unfamiliarity with ord. 2) poor lighting at the intersection during night time operations. 3) yellow taxi lines faded and difficult to see when wet. 4) the physical construction of the intersection and service road confluence. Suggest the installation of barrier lighting across service road entry to alert crews to taxiway direction and repainting yellow lines.

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Original NASA ASRS Text

Title: ACR X TXWY EXCURSION DUE TO POOR ARPT MARKING AND LIGHTING AT NIGHT.

Narrative: AFTER EXITING RWY 27L WE WERE ASSIGNED TXWY B TO GATE ON CONCOURSE. AT THE INTXN OF TXWY D AND TXWY B, WE WERE TO STAY ON TXWY B. HOWEVER, DUE TO SET TXWYS AND NIGHT TIME LIGHTING, THE SVC ROAD WAS MISTAKEN FOR THE TRANSITION TO TXWY B AT THAT INTXN. WE DISCOVERED OUR ERROR WHEN OUR PATH WAS BLOCKED BY LIGHTS AND SIGNS. WE REQUESTED ENTRY FROM OUR POS TO TXWY A WHICH GND APPROVED. NO TAXI LIGHTS OR SIGNS WERE STRUCK AND THE ENTIRE SURFACE WAS CONCRETE. WE ATTRIBUTE THIS ERROR TO 4 FACTORS: 1) UNFAMILIARITY WITH ORD. 2) POOR LIGHTING AT THE INTXN DURING NIGHT TIME OPS. 3) YELLOW TAXI LINES FADED AND DIFFICULT TO SEE WHEN WET. 4) THE PHYSICAL CONSTRUCTION OF THE INTXN AND SVC ROAD CONFLUENCE. SUGGEST THE INSTALLATION OF BARRIER LIGHTING ACROSS SVC ROAD ENTRY TO ALERT CREWS TO TXWY DIRECTION AND REPAINTING YELLOW LINES.

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.