TXWY EXCURSION. ARPT DESIGN PROB.

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DURING TAXI TO RWY 32R AT ORD; I WAS TAXIING CLOCKWISE ON TXWY B. DUE TO DARKNESS AND STEADY MODERATE RAIN IT WAS DIFFICULT TO SEE. THERE WAS ALSO A GREAT DEAL OF GLARE. AT THE INTXN OF TXWY B AND A18; TXWY B JOGS SLIGHTLY R THEN CONTINUES NBOUND. I WAS TAXIING VERY SLOWLY. AS I PASSED TXWY A18 I DID NOT JOG FAR ENOUGH R; AND WAS IN THE AREA DESCRIBED ABOVE. I HAD ROOM TO MANEUVER BACK OUT TO THE TXWY. (I ELECTED TO GO TO TXWY A BECAUSE THAT MADE MY EXIT A L TURN AND I COULD INSURE THAT I WOULD NOT HIT ANY TAXI LIGHTS.) THE AREA I TAXIED INTO WAS PAVED; AND AS IT TURNED OUT; THERE WAS NOT A PROB. IF AN ACFT HAD BEEN TAXIING THE OTHER WAY ON TXWY A; WINGTIP CLRNC MAY HAVE BEEN JEOPARDIZED. ALSO IT WOULD BE VERY POSSIBLE TO RUN OVER SOME TAXI LIGHTS. I WOULD LIKE TO POINT OUT THAT I AM VERY FAMILIAR WITH ORD; AND STILL HAD DIFFICULTY FOLLOWING TXWY B AT THIS POINT. I FEEL IT NEEDS TO BE BETTER MARKED AND/OR LIT TO IDENT THE JOG TO THE R; AND THE PAVED ISLAND ITSELF. APPROX 1 MONTH AGO; I OVERHEARD 2 PLTS TALKING ABOUT DOING THE EXACT SAME THING; SO I KNOW IT HAS HAPPENED AT LEAST 3 TIMES.