Complex sentence: A bill creating the Orlando-Orange County Expressway Authority (OOCEA) was signed into law in 1963, which, unlike the State Road Department (SRD), could raise money for new roads using tolls.
Split into simpler sentences: A bill creating the Orlando-Orange County Expressway Authority (OOCEA) was signed into law in 1963. The OOCEA had the power to do what the State Road Department (SRD) could not-raise money for new roads using tolls.