Texas trucking sits inside a four-agency regulatory framework that is wider than most states.
Interstate authority runs through FMCSA at the federal level; intrastate authority runs through the
Texas Department of Motor Vehicles Motor Carrier Division; insurance carriers and policy forms are
regulated by the Texas Department of Insurance; and highway infrastructure, oversize-overweight
permitting, and state-route operations run through the Texas Department of Transportation. Workers
compensation regulation sits inside TDI rather than a separate labor department — Texas is the one
state where the WC system houses inside the insurance regulator.
Federal authority — FMCSA, USDOT, and PHMSA
Interstate Texas motor carriers register with the
Federal Motor Carrier Safety Administration
for a USDOT number and motor-carrier authority, file BMC-91 or BMC-91X public-liability proof of
insurance through their carrier, and carry the MCS-90 endorsement on the auto liability policy.
Hazmat operations layer PHMSA placarding, training, and routing requirements on top of FMCSA
authority — Houston petroleum lanes and Beaumont chemical lanes are the two Texas clusters where
that layer matters most.
Texas Department of Transportation (TxDOT)
TxDOT
maintains the state highway and interstate network — I-10, I-20, I-30, I-35 (both E and W branches
through DFW), I-37, I-40, I-45, and I-69 — and administers oversize and overweight permits through
its Motor Carrier Division. Heavy-haul operators running permitted loads work directly with TxDOT
on routing approvals; pilot-car and escort requirements vary by load dimension and corridor.
Texas Department of Insurance (TDI) and TDI Division of Workers Compensation
TDI
regulates the property and casualty carriers that write Texas trucking auto liability, motor truck
cargo, physical damage, and pollution liability programs. The TDI Division of Workers Compensation
administers the state WC system — and Texas is unique in allowing private employers to elect
non-subscriber status, which is a decision a Texas trucking business should make with eyes open
because it removes statutory immunity against direct employee suits.
Texas Department of Motor Vehicles (TxDMV) Motor Carrier Division
Intrastate-only motor carriers — freight that originates and terminates inside Texas — register
through the
TxDMV Motor Carrier Division
rather than FMCSA. Many Texas owner-operators carry both an intrastate TxDMV registration and an
interstate USDOT number because lane mix shifts over a year. Unified Carrier Registration is handled
through TxDMV as well, in coordination with the multi-state UCR Plan.