The trucking industry doesn't want to pay for its use of Rhode Island's interstate highways. This is the industry whose lobbyists got the government to allow them to use 53-foot trailers, drastically increasing their weight.
Heavy trucks accelerate the loss of the elasticity of asphalt to the extent that a single truck causes more wear than 10,000 cars. The lack of tolls has been a hidden subsidy for the trucking industry by Rhode Island taxpayers, which it doesn't want to lose.
A free market does not have hidden subsidies. People don't want tax increases to pay for repairs of damage to roads and bridges caused by heavier trucks. Paying for the damage they cause should be a cost of doing business for the trucking industry.