Mississippi Combination Vehicles Test
You'll haul timber out of the Delta and chicken feed down US-49 — this test makes sure your trailer stays behind you, not beside you.
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Mississippi's combination vehicles test is 20 questions, 80% to pass. Practice now so you don't waste time at the MHP office.
Key Topics
- •Coupling & uncoupling
- •Jackknife prevention
- •Air brakes & trailer stability
About the Mississippi Combination Vehicles Test
Topics Covered
- ✓Coupling and uncoupling procedures — Mississippi examiners want the exact order, especially when you're hooking up a loaded grain trailer on a gravel lot in the Delta.
- ✓Trailer stability and rollover prevention — soft shoulders and narrow bridges on US-49 mean you can't cut corners without risking a tip.
- ✓Jackknife causes and prevention — slick roads from Gulfport to Tupelo make this the #1 cause of combination vehicle crashes in Mississippi.
- + 3 more topics
📘 Study Tips & State Info
Mississippi examiners are sticklers for the coupling sequence. They've seen too many drivers skip a step and lose a trailer on the highway. Memorize the order: inspect fifth wheel, back under, check the locking jaws, connect air lines and electrical, test the coupling, secure the gladhands. Don't mix up the order — if you do, you'll fail.
Practice questions about off-tracking with a specific Mississippi road in mind. When you turn onto a two-lane road like MS-16 near Greenwood, your trailer will cut the corner. How far do you need to swing? The manual tells you, but thinking about real roads helps it stick. Also, Mississippi's afternoon thunderstorms mean you'll often drive on wet pavement. Study how reduced traction affects your stopping distance and trailer sway.
Finally, know your air brake pre-trip inside out. The combination vehicles test often includes questions about air loss rates and emergency brakes. Mississippi's humidity accelerates rust and seal wear — examiners want you to catch those problems before you roll. Use our practice tests to drill the numbers: 60 psi before you can move, 20 psi loss per minute max, and never drive with a low-air warning.
Mississippi's CDL written tests are administered by the Mississippi Highway Patrol (MHP) at Driver Service stations across the state. Major testing locations include Jackson (MHP Headquarters on I-55 North), Southaven, Gulfport, Hattiesburg, and Tupelo. You'll need to schedule an appointment online or by phone — walk-ins are rarely accommodated for CDL testing.
To take the Combination Vehicles test, you must first hold a valid Mississippi commercial learner's permit (CLP). The fee for adding an endorsement is included in your CLP application fee (currently $40 for the permit). You'll also need to present your Medical Examiner's Certificate (DOT physical) and proof of residency. The test is 20 multiple-choice questions, and you need 16 correct to pass. If you fail, you can retake it the next business day, but MHP charges a $7 retest fee.
One unique thing about Mississippi: your combination vehicles test results are valid for 90 days. After that, if you haven't taken the skills test, you'll need to retake the written. So don't drag your feet — schedule your road test soon after passing. Also, Mississippi does not require a separate endorsement for doubles/triples on the written test; it's all included in the Combination Vehicles exam.
About the Mississippi Combination Vehicles Test
The Combination Vehicles endorsement is required for every Class A CDL applicant in Mississippi. If you plan to drive tractor-trailers, doubles, triples, or any truck pulling a trailer, you need to pass this test before you can take the skills exam. Mississippi follows federal CDL standards, but the state's roads and weather add their own wrinkles.
You'll be tested on coupling and uncoupling sequences, trailer stability, and avoiding jackknives. These aren't just textbook questions — they're the difference between a clean run down I-55 and a call to the insurance company. Mississippi examiners pay close attention to how well you understand off-tracking, especially on narrow two-lane highways like US-61 through the Delta.
Mississippi's climate matters too. High humidity and afternoon thunderstorms mean slick roads almost year-round. Fog along the Gulf Coast and the Mississippi River bottoms can cut visibility to zero in minutes. The test includes questions about adjusting your speed and following distance for these conditions. Know your air brakes cold — combination vehicles rely on them, and a failure on a grade near the Natchez Trace can turn ugly fast.
This practice test mirrors the real MHP exam. Same number of questions, same time limit, same emphasis on procedures you'll actually use. Take it until you're scoring 90% or better — that's what we recommend to every student we've trained in 15 years at the Mississippi DMV.
Topics Covered
Study Tips
Mississippi examiners are sticklers for the coupling sequence. They've seen too many drivers skip a step and lose a trailer on the highway. Memorize the order: inspect fifth wheel, back under, check the locking jaws, connect air lines and electrical, test the coupling, secure the gladhands. Don't mix up the order — if you do, you'll fail.
Practice questions about off-tracking with a specific Mississippi road in mind. When you turn onto a two-lane road like MS-16 near Greenwood, your trailer will cut the corner. How far do you need to swing? The manual tells you, but thinking about real roads helps it stick. Also, Mississippi's afternoon thunderstorms mean you'll often drive on wet pavement. Study how reduced traction affects your stopping distance and trailer sway.
Finally, know your air brake pre-trip inside out. The combination vehicles test often includes questions about air loss rates and emergency brakes. Mississippi's humidity accelerates rust and seal wear — examiners want you to catch those problems before you roll. Use our practice tests to drill the numbers: 60 psi before you can move, 20 psi loss per minute max, and never drive with a low-air warning.
Mississippi Specific Information
Mississippi's CDL written tests are administered by the Mississippi Highway Patrol (MHP) at Driver Service stations across the state. Major testing locations include Jackson (MHP Headquarters on I-55 North), Southaven, Gulfport, Hattiesburg, and Tupelo. You'll need to schedule an appointment online or by phone — walk-ins are rarely accommodated for CDL testing.
To take the Combination Vehicles test, you must first hold a valid Mississippi commercial learner's permit (CLP). The fee for adding an endorsement is included in your CLP application fee (currently $40 for the permit). You'll also need to present your Medical Examiner's Certificate (DOT physical) and proof of residency. The test is 20 multiple-choice questions, and you need 16 correct to pass. If you fail, you can retake it the next business day, but MHP charges a $7 retest fee.
One unique thing about Mississippi: your combination vehicles test results are valid for 90 days. After that, if you haven't taken the skills test, you'll need to retake the written. So don't drag your feet — schedule your road test soon after passing. Also, Mississippi does not require a separate endorsement for doubles/triples on the written test; it's all included in the Combination Vehicles exam.