Back to Louisiana Tests Not Louisiana? Change state

Louisiana Doubles and Triples Test

Passing the doubles and triples test means you can haul on Louisiana's wet highways like I-10 through the Atchafalaya Basin—don't let a tricky question slow you down.

Questions

80%

To Pass

Minutes

93 questions · 25 min time limit · 80% to pass

Opens in a practice window — choose your mode inside.

Reviewed by Jack Mahana, CDL Instructor (13+ years)

Last verified: August 2026

All questions sourced from the official Louisiana CDL handbook and FMCSA regulations.

About the Louisiana Doubles and Triples Test

Louisiana's highways carry everything from petrochemicals to farm goods across long distances. Doubles and triples rigs are common on I-10, I-12, and I-20, especially near the Port of New Orleans and Lake Charles' industrial corridor. If you're planning to pull more than one trailer, you'll need the T endorsement on your CDL.

Our practice test mirrors the Louisiana OMV's official exam. You'll face 20 multiple‑choice questions covering coupling, braking, stability, and weight restrictions. The real test has no trick questions—just facts you need to operate safely in Louisiana's humid, rainy climate and on its many drawbridges.

We keep it simple. Each question includes a clear explanation so you learn why the answer is right. Use this test to check your knowledge before you schedule your appointment. It's free, no sign‑up required, and works on your phone.

Topics Covered

✓Coupling and uncoupling procedures for Louisiana's port terminals and rail yards

✓Stability and handling on curved bridges over bayous and on I-10 near Baton Rouge

✓Air brake system checks in Louisiana's humid weather – avoid moisture buildup

✓Weight distribution and axle limits for Louisiana's parish roads and state highways

✓Pre‑trip inspection steps required for Louisiana DOT roadside inspections

✓Safe following distances and speed control on I-12 and I-20 during heavy truck traffic

Study Tips

Study the Louisiana Commercial Driver's License Manual, especially the doubles/triples section. Focus on coupling procedures—those are the most common missed questions. Don't just memorize; practice explaining each step out loud.

Take our test multiple times. The questions shuffle each try, so you'll see all the key topics. If you miss one, read the explanation and try again. Also check Louisiana's special rules for long combination vehicles on low‑clearance bridges—you'll find them in the manual.

Finally, schedule your OMV appointment at least two weeks out. Slots fill fast, especially near New Orleans and Baton Rouge. Arrive with your permit, medical card, and a valid vehicle for the skills test.

Louisiana Specific Information

Louisiana CDL testing is done at Office of Motor Vehicles (OMV) locations. You need an appointment for the knowledge test and the skills test. Walk‑ins are not accepted. The T endorsement costs $10 plus any base CDL fees. Bring your driver's license, social security card, proof of Louisiana residency, and a DOT medical certificate.

Testing sites include Baton Rouge (9619 Airline Hwy), New Orleans (2601 Canal St), and Lake Charles (1320 Ryan St). Some smaller stations only offer knowledge tests—call ahead. The doubles/triples knowledge test has 20 questions; you need 16 correct (80%). If you fail, you can retake it the next day.

For the skills test, you must bring a vehicle that actually has double or triple trailers. A single truck with a dolly won't qualify. The examiner will check coupling, braking, and backing. Think about renting a rig from a local training school if you don't have access.

Frequently Asked Questions

Do I need a separate endorsement for doubles and triples in Louisiana?

Yes. You need the 'T' endorsement on your CDL to pull more than one trailer. You'll take a written knowledge test and a skills test in a double or triple trailer vehicle.

Where can I take the Louisiana doubles/triples test?

You can test at any OMV office that offers CDL knowledge tests. For the skills test, you'll need a location with a suitable course. Check the OMV website or call your local office. Baton Rouge, New Orleans, and Lake Charles are common spots.

Can I take the doubles/triples test in a single truck?

No. For the skills test, you must drive a vehicle with double or triple trailers. The knowledge test doesn't require a vehicle—just a computer or paper exam.

What's the passing score for the Louisiana doubles/triples test?

You need 80% correct. The written test has 20 questions, so you must answer at least 16 correctly. If you fail, you can retry the next day.

Does Louisiana have special speed limits for doubles and triples?

Yes. On interstates, the maximum speed for any combination vehicle is 70 mph unless posted lower. On other roads, you must obey the posted limit. Louisiana also has reduced speed zones on bridges and in construction areas—always watch for signs.

Reviewed by Jack Mahana, CDL Instructor (13+ years)

Last verified: August 2026 · FMCSA-compliant content