How much does a Rhode Island ignition interlock cost?

Installation runs $75 to $150. Monthly monitoring and calibration runs $70 to $90. Removal is $50 to $75. A 1-year interlock period totals approximately $900 to $1,200. A 2-year period totals $1,800 to $2,400. The driver pays all costs. Indigent reductions are available with court approval.