Miami's Toll Roads Are Huge Scams That Must Be Eliminated. It's time to mount a serious campaign to end tolls in Miami-Dade County. Any time the government wants to charge people money, we should be allowed to vote on it. Florida's Turnpike Enterprise and the Miami-Dade Expressway Authority (MDX) are highway robbers preying on predominantly poor motorists struggling to have a roof over their heads, put food on the table, and take care of their families.