You already have your CDL. Now add the endorsements that expand your qualifications, open new career paths, and increase your earning potential — all available at our Irving, TX campus.
Smart CDL Academy offers professional training for all 6 major CDL endorsements right here in the DFW Metroplex. HazMat, Tanker, Passenger, School Bus, Doubles/Triples, and Combination — each one adding specialized qualifications to your existing Class A or Class B CDL and increasing what carriers will pay for your expertise. On-site endorsement testing at our Irving campus means you skip the DPS lines and test in the same environment you trained in.
CDL endorsements are add-on certifications that expand what you're legally qualified to drive or haul — added to your existing Class A or Class B CDL. They are regulated by the Federal Motor Carrier Safety Administration (FMCSA) and each endorsement type requires its own testing process. If you already hold a valid commercial driver's license and want to increase your earning power, endorsements are the most direct path.
Most endorsements are available to both Class A and Class B CDL holders. The T (Doubles/Triples) endorsement is exclusively for Class A holders. Smart CDL Academy is one of the few DFW schools offering all 6 major CDL endorsements at a single campus — no need to find multiple providers.
Endorsed specialists are among the most in-demand CDL professionals in the DFW market right now. Texas's ongoing endorsed driver shortage means carriers are actively competing for drivers with HazMat, Tanker, and Combination credentials.
Don't have your CDL yet? Start with our Class A CDL program or Class B CDL program first — then add endorsements to expand your qualifications.
Each endorsement opens distinct career paths and earning opportunities. Select any endorsement below for full training details, requirements, and career context.
The HazMat (H) endorsement authorizes you to transport hazardous materials as defined by federal DOT regulations. It requires a TSA security threat assessment — a federal background check through the Transportation Security Administration — in addition to a written exam.
Eligibility: Class A and Class B CDL holders
The DFW area's petrochemical and energy sector creates consistent demand for HazMat-endorsed drivers — one of the highest-earning CDL specializations.
Full HazMat Endorsement DetailsThe Tanker (N) endorsement is required to operate tank vehicles carrying liquid or gaseous cargo. Tanker-endorsed drivers are in high demand in Texas's energy sector — fuel and bulk liquid chemical transport routes throughout North Texas.
Eligibility: Class A and Class B CDL holders
Above-average earning potential — fuel delivery and liquid chemical transport pay well across the Texas market.
Full Tanker Endorsement DetailsThe Passenger (P) endorsement qualifies you to transport 16 or more passengers. It requires both a written exam and a CDL skills test in a passenger vehicle — separate from the standard CDL test you already passed.
Eligibility: Class A and Class B CDL holders
Career paths include DART (Dallas Area Rapid Transit), charter buses, shuttle services, and coach lines — stable, benefits-rich employment.
Full Passenger Endorsement DetailsThe School Bus (S) endorsement authorizes you to operate school buses specifically. It requires a written exam, a CDL skills test, and a state-required background check. Note: the S endorsement requires you to also hold or obtain the Passenger (P) endorsement — both can be pursued together at our Irving campus.
Eligibility: Class A and Class B CDL holders (also requires P endorsement)
School districts across DFW — including Dallas ISD — offer stable, family-friendly schedules with strong benefits packages.
Full School Bus Endorsement DetailsThe Doubles/Triples (T) endorsement qualifies you to legally pull double trailers and triple trailers — significantly expanding your route eligibility and carrier value for long-haul, OTR, and regional operations.
Eligibility: Class A CDL holders only — not available to Class B license holders
Above-average earning potential — increases your value to carriers operating long-haul and regional routes across Texas and nationally.
Full Doubles/Triples Endorsement DetailsThe Combination (X) endorsement combines both HazMat and Tanker qualifications — the highest-earning CDL endorsement available. Both H and N requirements apply: TSA security threat assessment, plus written exams for hazardous materials and tank vehicle operation.
Eligibility: Class A and Class B CDL holders
Petrochemical carriers, bulk fuel transport, and chemical tanker operations — the highest salary premium of any CDL endorsement type in the DFW market.
Full Combination Endorsement DetailsChoosing which endorsement to pursue depends on your current CDL class, career goals, and earning priorities. Here's how they compare.
Written Exam Only
N (Tanker), T (Doubles/Triples)
Written + Skills Test
P (Passenger), S (School Bus)
Written + TSA Check
H (HazMat), X (Combination)
Class A Drivers
H, N, T, X — max earning impact
Class B Drivers
P, S primary; H, N also available
Career Changers in Trucking
H or X first — highest pay increase
Local / Stable Focus
P, S — benefits-rich, home daily
Not sure which endorsement to prioritize? Call our admissions team at 972-989-6450 — we'll help you map the right endorsement path based on your current CDL class and career goals.
When you're comparing endorsement training providers, these three advantages matter most.
Most DFW CDL schools offer one or two endorsement types. Smart CDL Academy offers all 6 major endorsements at our Irving campus — add HazMat today, Tanker next year, Combination when you're ready. One provider, your entire endorsement career.
As an authorized Texas DPS Third Party Skills Test Provider (TPST #0221), you take your official endorsement skills test right here at our Irving campus — in familiar equipment, on a course you know. Faster licensing. Less stress.
Every endorsement program meets FMCSA compliance standards — ensuring your endorsement certification is recognized by every carrier in the country. Train with confidence that your credentials meet every federal and state requirement.
Adding an endorsement to your CDL is one of the fastest ways to increase your earning potential without starting a new career. Carriers actively seek endorsed drivers and typically offer higher base pay, sign-on bonuses, and better route options. Endorsed drivers consistently command a salary premium compared to non-endorsed CDL holders at the same carrier.
In the DFW and North Texas market, endorsed drivers in HazMat and Combination specializations consistently command premium rates — driven by the region's active petrochemical, energy, and freight sectors. The endorsed driver shortage is even more pronounced for specialists — HazMat and Combination-endorsed drivers are among the most sought-after CDL holders in the region.
Combination (X) and HazMat (H) endorsements carry the highest premiums — for full salary data by endorsement type, see each endorsement's dedicated page. Tanker (N) and Doubles/Triples (T) offer above-average pay increases, while Passenger (P) and School Bus (S) provide stable, benefits-rich employment with predictable schedules.
Start with the endorsement that matches your current license and career goals — every CDL upgrade you add expands what carriers will pay for your expertise.
Yes. CDL endorsements are add-on certifications that expand what you're legally qualified to drive or haul — they are added to an existing Class A or Class B CDL. You must already hold a valid commercial driver's license before pursuing any endorsement. If you don't yet have your CDL, start with our Class A or Class B CDL training program.
H is the HazMat endorsement — it qualifies you to transport hazardous materials. N is the Tanker endorsement — required for operating tank vehicles carrying liquid or gaseous cargo. X is the Combination endorsement — it combines both HazMat and Tanker qualifications into one, making it the most comprehensive and highest-earning CDL endorsement available.
The Combination (X) endorsement — which combines HazMat and Tanker — consistently commands the highest salary premium among all CDL endorsement types. HazMat (H) alone is a close second. For full salary context and earning data by endorsement type, visit each endorsement's dedicated page.
Yes. Most CDL endorsements are available to both Class A and Class B holders. The one exception is the Doubles/Triples (T) endorsement, which is restricted to Class A CDL holders only. All other endorsements — HazMat (H), Tanker (N), Passenger (P), School Bus (S), and Combination (X) — are available to Class B holders.
Yes. The School Bus (S) endorsement requires you to also hold or obtain the Passenger (P) endorsement — this is a federal requirement, not a school policy. Both endorsements can be pursued together at our Irving campus, so you can complete both efficiently in one location.
Endorsement timelines vary by type. Written-exam-only endorsements like Tanker (N) and Doubles/Triples (T) can be completed in a matter of days. Endorsements requiring a CDL skills test — Passenger (P) and School Bus (S) — take longer due to behind-the-wheel preparation. HazMat (H) and Combination (X) include TSA background check processing time, which adds several weeks. Contact our admissions team at 972-989-6450 for current timelines.
Yes. Smart CDL Academy is an authorized Texas DPS Third Party Skills Test Provider (TPST #0221). You can take your official endorsement written exam and skills test right here at our Irving campus — in familiar equipment, on a course you know. No need to schedule a separate appointment at a DPS office.
Yes. The HazMat (H) endorsement requires a TSA security threat assessment — a federal background check conducted through the Transportation Security Administration. This applies to both the standalone HazMat (H) endorsement and the Combination (X) endorsement, which includes HazMat. This is a federal requirement under DOT regulations, not a school-imposed condition.
Financing options may be available for endorsement training — contact our admissions team at 972-989-6450 for details on current payment options.
All 6 major CDL endorsements — HazMat, Tanker, Passenger, School Bus, Doubles/Triples, and Combination — available at one campus in Irving, TX. As an authorized Texas DPS Third Party Skills Test Provider (TPST #0221), we make the endorsement process faster and more convenient than scheduling through a DPS office.
Endorsed specialists are in high demand across the DFW Metroplex and North Texas. Every endorsement you add increases your qualifications, your earning power, and your value to carriers competing for specialized drivers.
Smart CDL Academy's Irving, TX campus serves CDL holders seeking endorsements from across the DFW Metroplex — easy access via I-635, SH-114, and I-35E from Dallas, Fort Worth, Arlington, Plano, Garland, and Grand Prairie.
Smart CDL Academy · 7700 Esters Blvd, Irving, TX 75063 · 972-989-6450
Endorsements are add-ons to your existing CDL — not prerequisites for new students. Don't have your CDL yet? Start here: Class A CDL program or Class B CDL program.
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