CHICAGO (S&P Global Ratings) Oct. 13, 2020--S&P Global Ratings revised its outlook to negative from stable and affirmed its 'AA' rating on the Regional Transportation Authority, Ill.'s (RTA) outstanding general obligation bonds. "The negative outlook reflects that we expect sales tax revenue collections to be pressured in the coming months, and potentially beyond, due to recessionary pressure," said S&P Global Ratings credit analyst Helen Samuelson. "The GO bond rating could be downgraded if actual revenue materially underperforms current projections. We believe the risks facing the RTA during the next year will be key to its future rating direction," Ms. Samuelson added. Our rating considers the ESG risks relative to RTA's GO bonds' economic fundamentals, revenue volatility, coverage and liquidity, and