{"carrier":{"dot_number":"40954","legal_name":"MATTSON TRANSPORTATION INC","dba_name":"","entity_type":"OTHER-UNKNOWN","operating_status":"OTHER-UNKNOWN","phy_street":"ATLANTIC BLDG","phy_city":"CHARLESTON","phy_state":"SC","phy_zip":"29418-8472","phy_country":"US","phone":"8037446342","mc_number":"MC-125505","mc_number_2":"","mc_number_3":"","carrier_operation":"A","hm_indicator":"N","power_units":4,"total_drivers":4,"total_cdl":0,"mcs150_mileage":0,"mcs150_mileage_year":"","mcs150_date":"20010612 0000","add_date":"19740601","officer_1":"","officer_2":"","fleet_size_class":"C","business_type":"CORPORATION","duns_number":"3369857","crash_rate":0,"prior_revoke_flag":"","prior_revoke_dot":"","cargo_types":"C","source":"census","ingested_at":"2026-05-16 01:35:37","updated_at":"2026-05-16 01:35:37"},"crashes":{"total":0,"fatal":null,"injury":null},"safety_scores":[]}