How to Get a Category D Driving Licence in Bulgaria?

Bulgaria requires you to have already held Category C for two full years before you can even start training for Category D, a genuinely specific prerequisite that catches people off guard if they assume D is a standalone starting point. This piece covers what Category D authorizes, the exact requirements, and the current documentation.

What Category D covers

Category D authorizes buses and coaches designed to carry passengers, with no upper limit on seating capacity.

Minimum age

The standard minimum age is 24. Under the EU’s harmonized rules, this can drop to 21 if you hold a certificate of professional competence.

You need to hold Category C for two years first.

This is genuinely important and easy to miss. To enroll in Category D training, you must already hold Category C, obtained at least two years before your enrolment date.

Documents you’ll need

• Original and copies of your education diploma (primary, secondary or higher)
• Copies of your ID card, existing driving license and control coupon
• A KAT (traffic police) reference confirming your current points balance
• A certificate of psychological fitness, issued by a DAI psychological laboratory

Other eligibility requirements

• Meeting the physical fitness requirements set out in the relevant ordinance
• Establishing your usual residence in Bulgaria
• Not holding another driving license issued by a different EU member state

Training hours

Category D training typically includes about 6 hours of theory and 16 hours of practical instruction, though the exact hours can vary by driving school.

Age discrepancy worth confirming directly

Some driving schools advertise Category D as available from 21 with the relevant professional competence route, while others cite the standard 24-year threshold without qualification. Given this genuine variation in how sources present it, confirm the exact age pathway that applies to your situation directly with your chosen driving school.

The exam process

You’ll need to pass both a theory exam covering traffic rules and vehicle-specific knowledge, and a practical exam demonstrating genuine control of a Category D bus in real traffic conditions.

Professional competence for commercial work

Holding Category D alone doesn’t authorize professional passenger transport work. You’ll additionally need a Certificate of Professional Competence (Karta za kvalifikatsia), obtained through separate training and examination.

Automatic transmission

Choosing an automatic-transmission vehicle for your exam here means the result will only cover vehicle-specific machines afterward.

DE: adding a heavier trailer

DE authorizes Category D vehicles combined with a trailer exceeding 750 kg, requiring you to hold Category D. Worth already noting: some articulated (“accordion”) buses used in training don’t carry trailer-attachment rights even under DE, so confirm your specific vehicle’s capability with your driving school.

D1, for comparison

D1 authorizes smaller minibusses with up to 16 passengers, with the same age structure as D but without the two-year Category C prerequisite, making it genuinely more accessible if you don’t need Category D’s unlimited capacity.

Validity

Professional categories, including Category D, are valid for 5 years, compared with 10 years for amateur categories such as A and B.

The points system

Bulgaria tracks driving offenses on a points system: 39 points total, or 26 for new drivers, with points deducted for specific violations.

Tips that actually help

• Plan your route through Category C well in advance, since Category D genuinely requires two years’ prior experience.
• Gather your diploma, ID copies, and KAT reference early, as the documentation requirements are extensive.
• Book your psychological fitness assessment at a DAI laboratory before enrolling.
• Ask your driving school whether your specific vehicle carries trailer-attachment rights under DE.

Articulated buses also fall under Category D.

Genuinely useful to know: articulated (“bendy”) buses are included under Bulgaria’s Category D classification, alongside standard rigid buses and coaches. There’s one specific restriction worth noting, though: attaching a trailer to an articulated bus is prohibited outright, regardless of the trailer’s weight, unlike standard Category D vehicles, where a trailer arrangement may be possible under DE.

Training structure and duration

Bulgarian Category D training follows a modular structure combining theoretical and practical instruction. The theory component typically runs 6 teaching hours, while practical training covers 16 hours split between a closed test track (polygon) and intensive urban driving conditions. The overall course, including internal exams, typically takes at least 10 days to complete, extending to around 12 days for candidates progressing at a normal pace through their practical lessons.

What the theory course actually covers

Bulgaria’s Category D theory curriculum genuinely focuses on the specifics of passenger transport rather than repeating general road rules you’d already know from Category B or C. Core topics include the regulations governing passenger transport specifically, the documentation required for both domestic and international passenger journeys, transport scheme structures, and the different types of bus services you might operate  scheduled routes, tourist charters, school transport, and international coach services each carry their own particular requirements.

The exam process in detail

After completing your training, you’ll sit internal exams at your driving school first, followed by official exams administered by the Executive Agency “Automobile Administration” (IAAA), Bulgaria’s national road transport authority. The theory exam is written and covers both internal and external components. The practical exam involves driving an actual Category D vehicle, a bus or microbus, in front of an IAAA examiner, both on the closed test polygon and in real urban traffic.

What the official exams cost

Official practical exam fees for Category D typically run around 70 lv, with an additional psychological test costing around 50 lv, a mandatory component confirming your psychological fitness for the heightened responsibility of passenger transport. Medical certification for Category D generally costs between 50 and 60 lv, in addition to the exam fees. Total course costs vary meaningfully by driving school and region, and it’s genuinely worth requesting a full, itemized quote before enrolling so you understand exactly what’s included and what additional fees might apply along the way.

The first-aid certificate requirement

Before you can submit your documents to KAT (the traffic police) for your actual license, you’ll need a valid first-aid certificate, typically obtained through the Bulgarian Red Cross. This certificate is valid for 5 years and isn’t tied specifically to your driving course timeline; you can complete it before, during, or after your Category D training, whichever fits your schedule better.

DAI and the transition to IAAA

You may still see references to “DAI” (Автомобилна инспекция) in older materials and on some driving school websites; this reflects the agency’s earlier name before its functions were consolidated under the Executive Agency “Automobile Administration.” Functionally, this doesn’t change what’s required of you as a candidate, but it’s worth knowing if you come across older or inconsistent terminology while researching.

Category D’s genuine career relevance in Bulgaria

Bulgaria’s public transport networks, intercity coach operators, and tourism sector all rely on Category D-qualified drivers, and demand has remained genuinely steady given an aging driver workforce across the sector. If you’re weighing Category D against other heavy-vehicle categories, it’s worth knowing that passenger transport roles often come with more predictable working hours than long-haul freight, since routes and schedules are typically fixed in advance, a genuine consideration if work-life balance matters to your decision.

Comparing Category D to Category C in terms of training investment

If you’re deciding between pursuing Category C (trucks) or Category D (buses) as your next step after Category B, it’s worth knowing that Category D’s practical training hours are broadly comparable to Category C’s. Still, the psychological assessment and passenger-transport-specific theory content add a layer of preparation that goods transport doesn’t require. Many candidates who already hold Category C find the transition to Category D smoother, since core vehicle-handling skills largely transfer, leaving the passenger-specific rules and psychological evaluation as the genuinely new elements to master.

Where this fits going forward

Category D in Bulgaria offers a genuine, if demanding, route into professional bus driving, rewarding drivers who build experience methodically through Category C first. If your plans extend toward professional driving down the line, take a look at the driver section, browse current vacancies, or see who’s hiring among employers on FastDriver.eu, alongside our broader jobs guides. Our driving license in Bulgaria and license eligibility pages provide the broader picture.

Documents you’ll typically need to enroll

Enrolling in a Category D course in Bulgaria genuinely doesn’t require an extensive paper trail. You’ll need your existing Category B or C license, a valid identity document, a medical certificate confirming fitness to drive, and your Red Cross first-aid certificate before you can submit your documents to KAT for the final license. Some driving schools note that a completed education diploma is no longer formally required under current regulations. However, KAT may still request one during final processing, so it’s worth having a copy available regardless.

Declaration

This article is provided for general information only and does not constitute legal or professional advice. Fees, training requirements, and administrative rules can change and may vary by driving school in Bulgaria. Always confirm current requirements with official Bulgarian sources before making decisions, such as the Sh AA (Executive Agency Automobile Administration). FastDriver.eu accepts no liability for decisions made based on this information.