All DGT questions
D630 questions·6 topics
DGT exam questions, D licence, with answers
Exam-style question bank for the D licence (carnet D) with correct answer and explanation. Practice free, no signup. This page gathers all 630 D licence questions in 6 topics; each links to its own answer and explanation page.
Traffic signs
- An identified driver personally disobeys a traffic sign while driving. With no special liability provision applying, who is responsible for that infringement?
- In 2026, which combination of accessories does Annex XII of Spain’s General Vehicle Regulations require on a bus registered in Spain?
- May a bus authorised to use the road travel in a lane opened against its usual direction because of roadworks?
- A bus authorised to carry standing passengers travels on an urban road with two or more ordinary lanes in each direction, without a shared carriageway-and-pavement platform or a specific posted limit. What is the general speed limit?
- A bus without a trailer and a car without a trailer meet head-on in a level narrowing wide enough for only one vehicle. No officer or signs regulate passage, and it is unclear who entered first. If one must reverse to let the other pass, which one is it?
- A bus without a trailer, equipped with seat belts and carrying no standing passengers, is not performing school or children’s transport. It legally overtakes a motorcycle on a dual carriageway outside a built-up area, with no lower specific limit. What is its general maximum speed while overtaking?
- You witness an accident while driving a Spanish-registered car. Under the PAS rule, what should you do first when intervening?
- If you encounter this sign at the entrance to a road narrowing, you must know that:
- At traffic lights reserved for regular bus services, the illuminated white band on a black circular background has the same meaning as a red light at a conventional traffic light when…
- In a traffic light reserved for regular bus lines, what does an intermittently flashing white band mean, equivalent to a fixed amber light on a conventional traffic light when…
- A bus without a trailer and a lorry towing a trailer arrive simultaneously from opposite directions at a narrowing on a stretch without a steep gradient. Neither has entered and no signs or directions regulate passage. If one must reverse, which will it be?
- You drive a bus on a street within a built-up area that is not a motorway or dual carriageway. There are three lanes in your direction marked by longitudinal lines, with no specific restrictions. Which lane may you use?
- If you are driving a large bus on a road, are you obliged to indicate to the vehicle following you that it may overtake you?
- Must a bus with a length of 13.50 metres display the V-6 Long Vehicle sign?
- On a carriageway with several lanes per direction, traffic is congested and each line moves at the speed of the vehicles ahead. A bus stays in the right-hand lane and its line moves faster than the others. Is that permissible?
- On a level narrow road, with no officer or signs regulating passage, a bus meets a car without a trailer. If one vehicle clearly entered first, which has priority?
- You drive a bus on a road with three lanes in your direction. After this R-305, may you overtake a lorry using only lanes in your direction, if no other prohibition applies and you can do so safely?
- Can the V-10 sign be used without the lower rectangle containing the 'school transport' legend?
- If you drive a charter bus, when must you obey traffic lights that have an illuminated band on a black circular background?
- In vehicles dedicated to passenger transport that are required to carry a complaints book, is it necessary to display a sign inside the bus indicating this?
- To overtake a motorcycle with your bus, you need to move the bus laterally, without entering the adjacent lane. Must you signal that movement?
- An adult driver, identified as the offender, drives a company vehicle through a red traffic light. Who is responsible for that traffic offence?
- Outside a built-up area, a bus needs to cross a continuous line to overtake a two-wheeled moped. Visibility is sufficient and all safety, clearance and speed conditions can be met. Do the rules permit this manoeuvre?
- If you drive a bus, as a general rule, will you be able to drive in a reversible lane?
- A bus travels on a dual carriageway with three lanes in its direction. After this R-305, may it overtake a lorry using only lanes in its direction if no other prohibition applies and the manoeuvre is safe?
Passenger transport
- For special regular public school transport covered by Article 1(a) of Royal Decree 443/2001, who gives prior notice of the stops to the competent traffic-regulation authority?
- On a motorway outside a built-up area, under normal conditions, what is the minimum speed at which a bus equipped with seatbelts and not used for the transport of minors must travel?
- If you are driving a bus and carrying out a discretionary public passenger transport service where at least three-quarters of the passengers are under 16 years old, you must know that the accompanying person...
- If you are driving a bus carrying out discretionary public passenger transport, where at least three-quarters of the passengers are under 16 years old, you must know that the accompanying person:
- Driving a D1 or D bus with poorly adjusted mirrors:
- A blind person travels with a guide dog recognised as an assistance dog and meets the required hygiene, health and safety conditions. May the person board a public bus with the dog?
- In interurban passenger transport services by road, contracted by seat with individual payment, which children who do not occupy a seat do not require a ticket?
- For vehicles registered in 2020 to which no exemption under Royal Decree 1417/2005 applies, which bus categories must have a limiter preventing speeds above 100 km/h?
- On a bus service covered by Article 1 of Royal Decree 443/2001, which proportion of passengers under 12 makes an attendant compulsory, independently of other grounds?
- You drive a vehicle intended for passenger transport with more than nine seats. What blood alcohol concentration must you not exceed?
- When an accompanying adult is required on school transport, where must that person occupy a seat?
- The driver of a city bus must know that its doors...
- Outside a built-up area, where should a voluntary stop or parking of a bus generally take place on a conventional road?
- A bus is not equipped with seat belts. On paved roads outside built-up areas, with no lower specific limit, what maximum speed applies?
- Under Article 11 of Royal Decree 443/2001, how must routes and schedules for transporting children between home and school be planned?
- Must a bus be equipped with a rear fog light?
- When do the regulations on safety conditions for the transport of schoolchildren and minors apply to regular public passenger transport for general use on the road?
- To drive a bus with a capacity of 20 people, including the driver, towing a trailer with a maximum authorised mass (MAM) of 650 kg, what driving licence do you need, at a minimum?
- A bus authorised to carry standing passengers is carrying them on a paved conventional road outside a built-up area. With no applicable lower limit, what is its maximum speed?
- Under Order FOM/1230/2013, a bus providing a public charter passenger service, outside its listed exemptions, must carry...
- For transport of minors covered by Royal Decree 443/2001, which of these situations requires an adult to supervise boarding and alighting?
- On a bus, aisles and emergency exits must be kept:
- Among vehicle categories intended for passenger transport, which must have a speed limiter under Royal Decree 1417/2005 when their registration date brings them within its scope and no exemption applies?
- If you are carrying out a school and minors' transport service on a two-door bus, where an attendant is not required, through which door must the minors get on and off the vehicle?
- Under the Land Transport Regulation Act (LOTT), how can public road passenger transport be classified?
Mechanics and maintenance
- When snow chains are the chosen anti-skid option for a bus, what minimum placement does the General Vehicle Regulations require, while also following fitting instructions?
- On a new tyre, the label in the image provides information on environmental and safety aspects. What information does this label include, among other things?
- In a lorry with a transmission-mounted hydraulic retarder, which wheels receive its retarding effect?
- In a vehicle whose cooling system has an expansion tank with level marks, where do you check the coolant level according to the manufacturer’s instructions?
- A 24 V starting system uses two identical compatible 12 V batteries. Which connection adds their nominal voltages?
- In a D1 or D bus, correct tire pressure:
- Two compatible, identical 12 V batteries form the manufacturer-specified supply for a 24 V starter motor. How must they be connected together to add their voltages?
- Outside a built-up area, a two-wheeled bicycle overtakes your bus. What minimum lateral separation must it leave between itself and the bus’s outermost parts?
- When parking a bus on a steep gradient and leaving the driving position, how must you secure it against rolling, in addition to the other precautions?
- For a flooded lead-acid battery whose manufacturer permits electrolyte inspection and topping up, what maintenance is correct?
- As a general rule, what is the first measure that should be taken to control a heavy bleed in a leg?
- In an air-brake system equipped with an air dryer, what function helps prevent ice forming in the lines?
- In a diesel engine with a conventional mechanical injection pump, which assembly includes the governor that limits maximum engine speed?
- If the carriageway you are driving on is wet, the braking distance will be:
- The gears of the gearbox and differential bevel gears are generally lubricated with:
- How often must a bus that is four years old undergo the periodic technical inspection?
- To check a bus engine’s oil level correctly, which procedure should you follow?
- A bus has hydraulic power steering with a reservoir and level marks. Should the driver check its fluid?
- On a bus with hydraulically operated clutch controls and a separate fluid reservoir, where is fluid added when the manufacturer’s manual indicates it is necessary?
- What is the function of the intercooler?
- In a combustion engine with a turbocharger and intercooler, where is the intake air filter located?
- If an exhaust silencer is broken and no longer properly attenuates engine noise, what effect does this have?
- Under normal conditions, how is the tyre prevented from coming off the rim?
- What does the word “TUBELESS” written on the side of a tyre indicate?
- Under the generic Annex IX limit, what is the maximum authorised mass of a two-axle Class II or III bus?
Passenger transport rules
- Taking into account the volume of a bus, when is the wind most dangerous?
- If you are driving a bus and a traffic officer is directing traffic, you must:
- The ordinary validity period of D1 and D licences is:
- As a general rule, the bus you are driving will have a maximum width of:
- To drive a trolleybus without a trailer designed to carry 40 passengers in addition to the driver, which is the minimum licence category required among those listed?
- A bus’s windscreen wipers have hardened rubber and leave streaks that impair vision even with a clean windscreen. What should you do?
- Which of these risk factors directly concerns the driver’s behaviour?
- A conscious adult has a partial airway obstruction but can breathe and cough effectively. What should you do initially?
- One of the reduced ages provided for obtaining the D licence is 23 when the applicant:
- Regarding alcohol and driving, a professional driver should know that...
- Does the measurement of the vehicle's frontal surface area affect air resistance during travel?
- Before or during the practical tests for the D1 and D licences, examiners may check whether the vehicle:
- Which buses must have end-outline marker lights fitted because of their width?
- May the bus you drive have front fog lights?
- The PAS rule sets out the basic steps to follow if you are involved in or witness a road traffic accident. What order of action does this rule establish?
- In general, because of their design characteristics, motorways and dual carriageways are...
- While driving, if you use a phone through a permitted hands-free system, you should know that...
- What is the purpose of conventional fuses in a vehicle’s electrical system?
- If the map you are using has a scale of 1:300,000, you should know that one linear centimetre is equivalent to:
- Under the wording of Annex VI.A.2 of the General Driver Regulations, what minimum interval is specified between successive attempts after the third, except for a justified exceptional reduction?
- With no sign modifying the limit and no other applicable special limit, what is a bus’s general maximum speed on a motorway within a built-up area?
- After making an accident scene safe and calling 112, which action is appropriate for a bystander?
- What is the general limit for a bus on a conventional road outside a built-up area, fitted with seat belts and carrying seated passengers, with no school transport or other lower limit?
- Without extensions for videos or justified special needs, what is the regulatory time per question in the D1 or D specific knowledge test?
- Without applying CAP-linked reductions, the general minimum age to obtain the D licence is:
Bus driving techniques
- After securing the scene and calling 112 for a bus crash, a driver without medical training approaches an injured adult. What initial assessment should guide assistance under the dispatcher’s instructions?
- What can be done to reduce the effects of crosswind?
- As a general rule, what is the maximum length of a rigid bus with more than two axles, without a trailer?
- What is the maximum length allowed for a rigid bus with two axles?
- What is the regulatory maximum length of a rigid bus with more than two axles?
- You drive a bus without a trailer on a motorway outside a built-up area. It has seat belts, carries no standing passengers and is not providing school or child transport. No lower specific limit applies. What maximum speed must you also respect when overtaking?
- If you are driving a bus on a conventional road, in which case must you travel at a moderate speed or stop the vehicle if necessary?
- Before turning with a D1 or D bus, besides signaling, it is advisable to:
- Before changing lane or starting a maneuver with a bus, it is advisable to:
- A bus fitted with seat belts, with all passengers seated, tows a light trailer on a motorway outside a built-up area. With no school transport or applicable lower limit, which general maximum speed must it not exceed, including when overtaking?
- Which driving licence do you need if you intend to drive an articulated bus?
- A bus with a maximum authorised mass of 18,000 kg travels through a tunnel without intending to overtake. Under Article 95.6, what minimum distance or time gap must it keep behind the vehicle ahead?
- What should you do when driving in fog?
- When leaving a bus stop it is advisable to check especially:
- You are driving a bus with a total length of 11.50 metres along a road within a built-up area. What minimum distance must you leave from the vehicle in front if you do not wish to overtake it?
- In order for the driver to be able to anticipate hazards and act in time, they should:
- A conscious adult is choking but can speak, breathe and cough effectively. What should you do first?
- Do you need to know how to load and distribute the load correctly when driving a bus?
- An articulated bus equipped with seat belts travels on a dual carriageway outside a built-up area, with no standing passengers and no school or minors transport. With no lower specific limit, what is its general maximum speed?
- If you are driving an articulated bus 16 metres long along a road through a built-up area, are you required to keep a distance of at least 50 metres from the vehicle in front of you?
- If you are driving a bus, you must bear in mind that the braking distance:
- A visually impaired person wants to board a public service bus with a duly recognised and identified guide dog and meets the applicable requirements. Must the dog be allowed to accompany the user?
- In rain, if you are driving a bus, the correct action is to:
- You drive a bus with seated passengers and seat belts, with no school or special transport, on a conventional road signed as a road for motor vehicles, outside a built-up area and with no lower limit. A car maintains 90 km/h. May you pass it by increasing speed above 90 km/h?
- What criterion should guide replacement of a bus’s windscreen wiper blades?
Driving and rest times
- Under Regulation 561/2006’s driving and rest regime, what describes driving time?
- If you feel fatigued while driving a bus, the correct action is to:
- A bus operates exclusively a regular passenger service whose complete route is 40 km long. Is that service subject to mandatory tachograph use under Regulations 561/2006 and 165/2014?
- If you are required to comply with driving and rest time regulations, can you reduce your normal daily rest period?
- You are driving a coach on a motorway and a passenger asks you to make an unscheduled stop. Are you allowed to do so using the hard shoulder?
- If you are required to use a tachograph, can the maximum daily driving time be 10 hours?
- Aggressive driving with a D1 or D bus:
- In Spain, under Order FOM/1190/2005, how many digital tachograph company cards may a company request?
- If fatigue appears while driving a D1 or D bus, the safest action is to:
- If you are required to use a tachograph and have driven for 56 hours during one week, what is the maximum number of hours you are allowed to drive in the following week?
- In a bus passenger service subject to Regulation (EC) 561/2006, what is the general daily driving-time limit, without using its exceptional extension?
- In a regular passenger service subject to Regulation (EC) 561/2006, how may the 45-minute break be split?
- In rain, when driving a D1 or D bus, it is advisable to:
- If, because of the vehicle you drive, you are required to comply with the rules on driving and rest times, as a general rule, the maximum daily driving time will be:
- What can be done to avoid having an accident due to fatigue or sleepiness?
- If you are subject to Regulation (EC) 561/2006 and take a regular daily rest in a single period, what is its minimum duration?
- A bus driver subject to the ordinary limits of Regulation (EC) 561/2006 has driven for 56 hours in one week. Under the two-consecutive-week limit, what is the maximum driving time in the following week?
- A bus driver is subject to the ordinary limits of Regulation (EC) 561/2006. What is the maximum driving time in one week?
- As a general rule, the maximum daily driving time for a driver subject to Regulation (EC) 561/2006 is:
- Under the rules on driving and rest periods, a week is the period between…
- Under Regulation 561/2006, how long is the minimum regular daily rest if taken without splitting it?
- Under the definition in Regulation (EC) 561/2006, what is the minimum duration of a regular weekly rest period?
- You are subject to Regulation (EC) 561/2006 and drove for 50 hours in one week. Considering the total limit for two consecutive weeks, what is the maximum driving time remaining for the following week?
- In congestion, with a D1 or D bus, keeping space from the vehicle ahead helps to:
- What function does the tachograph perform?
How to pass the D licence questions
This bank holds 630 exam-style DGT questions updated for 2026 for the D licence, organised in 6 topics. Each question includes the options, the correct answer and an explanation so you understand why and don't repeat the mistake.
The most effective strategy is to alternate three study modes: reading the syllabus, taking simulations under real conditions (20 questions, 20 minutes, max 2 errors) and reviewing the questions you got wrong. Failed questions enter the smart-review queue until you master them.
The questions update whenever the DGT changes the syllabus. The main 2026 updates concern new rules on personal mobility vehicles (VMPs), urban speed limits and the mandatory V-16 emergency light replacing warning triangles.
Frequently asked questions about the D licence
- How many questions does the D licence theory exam have?
- The D licence theory exam has 20 multiple-choice questions, lasts 20 minutes and allows a maximum of 2 wrong answers to pass. The questions in this bank follow that format, but it is not the official DGT bank.
- What is the minimum age for the D licence in Spain?
- The minimum age for the Spanish D licence is 24. You can start studying and enrol at a driving school earlier, but the official exam only takes place once you reach this age.
- What vehicles can I drive with the D licence?
- With the D licence you can drive: Buses and coaches for more than 8 passengers.
- How many practice simulations should I do before the D exam?
- A rough benchmark is at least 15 full simulations in real format (20 questions, 20 minutes, max 2 wrong). In your last 5 consecutive simulations you should miss 1–2 questions at most before booking the official sitting.