Carrier profile · USDOT 609043 · MC-342339 · Updated Jun 13, 2026
STILES ENVIRONMENTAL TESTING INC
2 power unitsROCKFORD, IL50/100
AUTHORITY STATUS UNKNOWNMC-342339 STATUS UNKNOWN
Operations & Lanes
Where this carrier actually runs, revealed by roadside-inspection geography over the last 24 months — not where they claim to operate, shown as state-level inspection density.
Inspection density by state· each tile = a state · shade = inspections, last 24 mo
Home base
ROCKFORD, IL
Density
fewermore