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Key Facts: Greece Category D Theory Exam

10

Questions in Ερωτηματολόγιο 5, the official Category D1/D theory paper

Ministerial decision 50984/7947/2013, Article 22

15 min

Time allowed for the official Category D theory examination

Ministerial decision 50984/7947/2013, Article 22

1

Wrong answers a candidate may give and still pass the official theory test

Ministerial decision 50984/7947/2013, Article 22

4

Languages the official theory test is offered in: Greek, English, Albanian and Russian

Ministerial decision 50984/7947/2013, Article 22

24 / 21

Minimum age for Category D: 24, or 21 on the Mitos route that includes the P.E.I.

https://mitos.gov.gr

EUR 263.04

Total public fees listed for the Category B to D extension with P.E.I.

https://mitos.gov.gr

Use this bank to prepare for the Greece Category D bus theory test. The official examination is 10 computerized questions from Ερωτηματολόγιο 5 (Θεωρητική Εκπαίδευση Υποψηφίων Οδηγών Λεωφορείων), three options each, 15 minutes, passed with at most one wrong answer, sat in Greek, English, Albanian or Russian. This is an English-language MCQ study adaptation of the official syllabus with four options per question and 100 items, so it is a study aid rather than a simulation of the official paper. Content is current to the Greek Highway Code n. 5209/2025, which changed bus and urban speed limits.

Sample Greece Category D Theory Practice Questions

Try these sample questions to review concepts for the Greece Category D Theory exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under Presidential Decree 51/2012 and EU driving licence directives, what is the statutory definition of a Category D motor vehicle in Greece?
A.A motor vehicle designed and constructed for the carriage of more than eight passengers in addition to the driver
B.A motor vehicle designed solely for transporting commercial cargo with a gross weight over 3.5 tonnes
C.A passenger vehicle designed for carrying no more than eight passengers excluding the driver
D.An agricultural tractor equipped with passenger bench seats
Explanation: Under PD 51/2012 (incorporating EU Directive 2006/126/EC), Category D covers motor vehicles designed and constructed for the carriage of more than eight passengers in addition to the driver (buses and coaches). A trailer with a maximum permissible mass not exceeding 750 kg may be coupled.
2Under Article 57 of the Greek Highway Code (n. 5209/2025) and EU Directive 96/53/EC, what is the standard maximum permitted overall width for passenger buses and coaches?
A.2.55 metres
B.2.40 metres
C.2.60 metres
D.2.75 metres
Explanation: Under Directive 96/53/EC, applied in Greece through Article 57 of the Highway Code (n. 5209/2025) together with p.d. 1161/1977 and p.d. 77/1998, the maximum permitted overall width for standard passenger buses and coaches, excluding mirrors and direction indicators, is 2.55 metres.
3Under Article 57 of the Greek Highway Code (n. 5209/2025), what is the maximum statutory permitted vehicle height for standard commercial passenger buses?
A.4.00 metres
B.4.50 metres
C.3.60 metres
D.4.20 metres
Explanation: Under Directive 96/53/EC, applied through Article 57 of the Greek Highway Code (n. 5209/2025), the maximum permissible height for buses, coaches and double-deck vehicles on public roads in Greece is 4.00 metres, which is what guarantees clearance under motorway overpasses and tunnel crowns.
4Under EU Directive 96/53/EC and Greek transport regulations, what is the maximum standard permissible length for a two-axle rigid passenger bus?
A.13.50 metres
B.12.00 metres
C.15.00 metres
D.18.75 metres
Explanation: While standard rigid freight trucks are limited to 12.00 metres, EU Directive 96/53/EC (as amended by Directive 2002/7/EC and transposed into Greek law) permits two-axle rigid buses to have an extended maximum length of up to 13.50 metres.
5What is the statutory maximum permitted length for a three-axle rigid coach under Greek and European regulations?
A.15.00 metres
B.13.50 metres
C.16.50 metres
D.18.00 metres
Explanation: Under EU Directive 96/53/EC and Greek legislation, a rigid passenger bus or coach having three or more axles may have a maximum overall length of up to 15.00 metres, provided it complies with standard European turning circle swept-path regulations.
6Under Article 57 of the Greek Highway Code (n. 5209/2025), what is the maximum permitted total length of an articulated passenger bus (αρθρωτό λεωφορείο)?
A.18.75 metres
B.15.00 metres
C.20.50 metres
D.25.25 metres
Explanation: Under Directive 96/53/EC, applied through Article 57 of the Greek Highway Code (n. 5209/2025), an articulated bus made of two rigid sections permanently connected by an articulation joint and passenger bellows has a maximum legal length of 18.75 metres.
7How does the dual-circuit pneumatic service brake system enhance passenger safety on modern commercial buses?
A.It divides the service brakes into two independent circuits (front and rear axles), so if one circuit loses air pressure, the other retains braking capability
B.It doubles the vehicle speed when applying the brake pedal on highway descents
C.It eliminates the need for air reservoirs by utilizing direct exhaust gas back-pressure
D.It allows the driver to brake individual wheels manually using dashboard toggle switches
Explanation: Dual-circuit pneumatic braking systems use independent air lines, check valves, and air tanks for Circuit 1 (typically rear axle) and Circuit 2 (front axle). A pneumatic rupture in one circuit will not deplete the other, ensuring residual braking power to stop the bus safely.
8What is the typical operating pressure range maintained by the compressor pressure governor (unloader valve) in a commercial bus pneumatic air brake system?
A.Between approximately 8.0 and 10.0 bar (800 to 1,000 kPa)
B.Between 1.0 and 2.0 bar (100 to 200 kPa)
C.Between 25.0 and 30.0 bar (2,500 to 3,000 kPa)
D.Exactly 0.5 bar at all times
Explanation: The governor regulates reservoir pressure between a cut-in point, at which the compressor starts charging, and a cut-out point, at which it unloads and the air dryer purges. Working pressure on a heavy commercial vehicle sits in the region of 8 to 10 bar; the Ministry's own theory manual for lorry candidates gives roughly 9 to 10 bar as the lowest permitted working pressure in a compressed-air brake system.
9What is the primary function of the air dryer unit (αφυγραντήρας) in a bus pneumatic braking and suspension system?
A.To extract moisture and oil aerosols from compressed air before it enters the reservoir tanks, preventing corrosion and valve freeze-up
B.To pre-heat the passenger cabin ventilation air in winter
C.To compress fuel vapour before injection into diesel cylinders
D.To evaporate rain water from the exterior windscreen wipers
Explanation: Compressing atmospheric air concentrates water vapour. The air dryer contains desiccant pellets that absorb moisture and oil from the compressed air charge before it reaches tanks and control valves, preventing internal corrosion and winter line freeze-up.
10How do spring brake actuators (κυλινδροθάλαμοι ελατηρίου) operate to secure a parked bus safely?
A.Heavy mechanical springs apply the brakes automatically; compressed air pressure must be applied to compress the spring and release the brakes
B.Electromagnets clamp the wheel rims when the engine ignition key is turned off
C.Hydraulic fluid is boiled to expand against the brake drums
D.Mechanical pawls engage directly into the transmission output gear teeth
Explanation: Spring brake chambers are fail-safe devices. When the driver engages the parking brake hand control (or if pneumatic system pressure drops below ~4.5 bar), air is vented from the spring chamber, allowing powerful mechanical coil springs to expand and clamp the rear foundation brakes.

About the Greece Category D Theory Exam

The Greece Category D driving theory examination is the official assessment for drivers extending their licence to passenger vehicles designed to carry more than eight passengers in addition to the driver. Regional Transport and Communications Directorates administer it on the computerized M.S.TH.E.Y.O. system, drawing the questions from Ερωτηματολόγιο 5 of ministerial decision 50984/7947/2013. This practice bank covers the same official syllabus - bus dimensions and capacity, pneumatic braking and retarders, air suspension and kneeling, passenger and accessibility safety, emergency equipment and evacuation, EU driving and rest times under Regulation (EC) 561/2006, the digital tachograph, and Greek Highway Code rules for buses - as an English-language MCQ study adaptation rather than a reproduction of the official questionnaire.

Exam sponsor: Hellenic Ministry of Infrastructure and Transport (Υπουργείο Υποδομών και Μεταφορών). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

The official examination is 10 computerized questions from Ερωτηματολόγιο 5 on the M.S.TH.E.Y.O. system, three options each, 15 minutes, passed with all answers correct or at most one wrong. It is taken in Greek, English, Albanian or Russian, or in Greek with audio headphones. A practical test of skills and behaviour follows; drivers working professionally also sit the separate P.E.I. theory examination (60 questions plus case studies).

Time Limit

15 minutes

Passing Score

90% (9 out of 10 correct; maximum 1 error permitted)

Exam / Certification Fees

EUR 15 e-paravolo (code 2037) for the category theory examination; Mitos lists EUR 263.04 in total public fees for the extension from Category B with P.E.I., excluding driving-school tuition.

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

20%

Bus Dimensions, Capacities, and Mechanical Systems

Vehicle dimensions, weight ratings, passenger capacity calculation, pneumatic air brakes, retarders, air suspension, and kneeling systems.

22%

Passenger Safety, Boarding, and Emergency Equipment

Boarding/alighting safety, PRM wheelchair ramp operation, standee limits, emergency exit doors, roof hatches, glass hammers, and fire extinguishers.

22%

Driving Hours, Rest Periods, and Digital Tachograph

Regulation (EC) 561/2006 driving limits (9h/10h daily, 56h weekly), 45-minute breaks, daily/weekly rest, 12-day international coach derogation, and tachographs.

18%

Road Rules, Speed Limits, and Bus Operations

Article 24 bus speed limits (100 km/h motorway, 90 expressway, 80 elsewhere; 70 for articulated buses; 80/80/60 for pupil transport; 30 km/h general urban limit), bus lanes, bus-stop priority and the 12-metre stopping ban, Article 33 lane restrictions, and school transport rules.

18%

Defensive Driving, Passenger Comfort, and Incident Handling

Smooth driving dynamics, blind spot surveillance, adverse weather handling, passenger conflict management, evacuation procedures, and KTEO checks.

Preparing for the Greece Category D Theory Exam

What You Need to Know

  • Passing score: 90% (9 out of 10 correct; maximum 1 error permitted)
  • Assessment: The official examination is 10 computerized questions from Ερωτηματολόγιο 5 on the M.S.TH.E.Y.O. system, three options each, 15 minutes, passed with all answers correct or at most one wrong. It is taken in Greek, English, Albanian or Russian, or in Greek with audio headphones. A practical test of skills and behaviour follows; drivers working professionally also sit the separate P.E.I. theory examination (60 questions plus case studies).
  • Time limit: 15 minutes
  • Exam / certification fees: EUR 15 e-paravolo (code 2037) for the category theory examination; Mitos lists EUR 263.04 in total public fees for the extension from Category B with P.E.I., excluding driving-school tuition. Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Greece Category D Theory: Suggested Study Strategy

1Focus on passenger safety protocols: never move the bus with open doors, verify clear mirrors before closing doors, and ensure standees remain behind the driver's demarcation line.
2Understand emergency equipment requirements: locations and inspection of fire extinguishers, operation of emergency door release valves, and availability of glass-breaking hammers at emergency windows.
3Master Regulation (EC) 561/2006 rules, including the special 12-day derogation for single occasional international passenger coach services.
4Learn the Article 24 speed table of the Greek Highway Code (n. 5209/2025) as a set: a standard bus runs at 100 km/h on motorways, 90 on expressways and 80 on the rest of the network; articulated buses are capped at 70 everywhere; buses carrying pupils run at 80/80/60; and the general limit inside built-up areas is now 30 km/h. The 100 km/h M2/M3 speed limiter is a separate device, not a road limit.
5Note that the Highway Code was replaced by n. 5209/2025, so older practice material still quoting Articles 20, 21, 27, 34, 42, 43 and 53 is citing repealed numbering; the equivalents are Articles 24, 29, 31, 38, 46, 47 and 57.
6Learn accessibility procedures: safe deployment of wheelchair ramps, proper securing of wheelchairs with tie-down restraints and occupant seatbelts, and kneeling suspension operation.

Frequently Asked Questions

What is the official format of the Greece Category D theory test?

Article 22 of ministerial decision 50984/7947/2013 sets it at 10 questions from Ερωτηματολόγιο 5, the bus questionnaire, taken on the Ministry's M.S.TH.E.Y.O. computers. Each question offers three answers of which one is correct, the paper lasts 15 minutes, and a candidate passes with every answer correct or at most one wrong.

How does this practice bank differ from the official examination?

It is an English-language MCQ study adaptation of the official syllabus, not a translation or a simulation of the official paper. It runs to 100 questions with four options each, whereas the official test is 10 questions with three options each. Use it to learn the material; the format itself is best rehearsed on the Ministry's own questionnaire through your driving school.

What are the prerequisites for Category D in Greece?

A valid Category B licence, normal residence in Greece, fitness certificates from doctors of at least two specialities, and at least 15 theory and 15 practical lessons at a licensed driving school. The minimum age is 24, or 21 on the Mitos route that couples the licence with the Certificate of Professional Competence (P.E.I.) for passenger transport.

In what languages is the official Greek Category D theory test offered?

Article 22 of the ministerial decision makes the questionnaires available in Greek, English, Albanian and Russian, and also in Greek with audio through headphones. The Mitos procedure confirms the same four languages when the theory examination is scheduled.

What happens after passing the Category D theory test?

Candidates go on to the practical test of skills and behaviour in a Category D training bus. Where the P.E.I. is being obtained at the same time, its separate theory examination of 60 questions plus case studies and its practical test must also be passed before the practical driving test can be scheduled.

What public fees apply to the Category D licence extension in Greece?

Mitos lists EUR 263.04 in total public fees for the extension from Category B with P.E.I.: EUR 193.04 single fee, EUR 15 for the category theory examination, EUR 15 for the practical test, EUR 20 for the P.E.I. theory examination and EUR 20 for the P.E.I. practical test. Driving-school tuition is charged separately by the school.