Department Of Safety Koko Exit I 40 Brownsville, TN 38012 Phone : (731) 772-3177 Department Of Safety Business Category Government Offices-State Legislative Bodies Tennessee State Government--public Service Commission Koko Exit I 40 Brownsville, TN 38012 Phone : (731) 772-3177 Business Category Government Offices-State Services Miscellaneous Government Offices State & Local Government Offices & Public Schools