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Key Facts: Kunskapsprov C1E Exam

60

Total Questions

Trafikverket

55

Scored Questions

Trafikverket

44 of 55

Passing Score

Trafikverket

40 min

Time Limit

Trafikverket

420 SEK

Daytime Theory Test Fee

Trafikverket 2026

1 year

C1E Theory Pass Validity

Trafikverket

12,000 kg

Maximum C1E Combination Weight

Transportstyrelsen

80 km/h

Max Speed with Heavy Trailer

Trafikförordningen

The Swedish Category C1E theory test comprises 60 multiple-choice questions in 40 minutes, where 55 questions count toward the final score and 5 are unscored trial questions. Candidates must achieve 44 of 55 points (80%) to pass. The standard test fee is 420 SEK daytime or 520 SEK evenings/weekends. An approved theory test is valid for 1 year, during which the practical driving test must be completed. Category C1E requires a category C1 or C licence, a driving-licence permit backed by a medical certificate, and minimum age 18.

Sample Kunskapsprov C1E Practice Questions

Try these sample questions to review concepts for the Kunskapsprov C1E exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the primary function of the red pneumatic line (matarledning) in a dual-line trailer brake system?
A.It transmits the proportional braking signal from the foot pedal when the driver brakes
B.It supplies air to the trailer and triggers emergency braking if severed
C.It provides electrical return grounding for the trailer's anti-lock braking system
D.It releases heated hydraulic fluid to prevent brake shoe condensation in cold weather
Explanation: In Swedish and European commercial dual-line pneumatic systems, the red line (matarledning) supplies continuous reservoir pressure (approx. 7.5-8.5 bar) from the towing vehicle to charge the trailer air tanks. If this line detaches or loses pressure, the trailer's emergency relay valve senses the pressure loss and automatically applies full emergency braking.
2What is the function of the yellow pneumatic line (manöverledning) when towing a heavy trailer?
A.It powers the trailer's tail lamps and hazard warning flashers
B.It maintains constant supply pressure to refill the trailer air reservoirs while driving
C.It carries the variable control pressure that applies the trailer brakes
D.It mechanically locks the drawbar coupling jaw to prevent accidental uncoupling
Explanation: The yellow line (manöverledning) transmits control pressure from the towing vehicle's brake valve to the trailer relay valve whenever the driver depresses the service brake pedal. The air pressure delivered through this line is directly proportional to how hard the driver presses the pedal.
3When connecting standard pneumatic lines during coupling, what is the recommended connection sequence and why?
A.Always leave the red supply line disconnected until after driving the first test kilometer
B.Connect the red supply line first, then the yellow line, to test the tail lights before pressurizing the brakes
C.Connect both lines simultaneously using high-pressure hydraulic clamps while the engine revs at high idle
D.Connect yellow first, then red, so the trailer brakes do not release before control is in place
Explanation: Connecting the yellow control line first ensures that the trailer has a braking command pathway in place before reservoir air is admitted through the red line. When the red supply line is subsequently connected, the trailer reservoirs charge and release the automatic emergency brake in a controlled manner without unexpected movement.
4What is the statutory maximum combined total weight (tågtotalvikt) permitted for a vehicle combination under driving licence category C1E?
A.7,500 kg
B.12,000 kg
C.18,000 kg
D.24,000 kg
Explanation: Under the Swedish driving licence rules (körkortslagen), category C1E entitles the holder to drive a combination of a category C1 towing vehicle and a trailer over 750 kg, or a category B car and a trailer over 3,500 kg, provided the total combination weight does not exceed 12,000 kg.
5On an overrun-braked trailer (påskjutsbroms) up to 3,500 kg, what is the role of the breakaway safety cable (katastrofbromsvajer)?
A.It grounds electrical current from the alternator to prevent sparks near the fuel tank
B.It keeps the trailer physically tethered behind the towing vehicle so the driver can continue towing safely
C.It pulls the trailer's handbrake lever if the coupling comes off the towball
D.It disengages the trailer suspension to lower the trailer bed directly onto the tarmac
Explanation: The safety breakaway cable (katastrofbromsvajer) is anchored to a dedicated loop on the towing vehicle. If the trailer coupling becomes unseated while underway, tension on the cable triggers the trailer's handbrake lever to stop the runaway trailer before the cable snaps.
6What immediate reaction occurs in the trailer brake system if the red air supply hose breaks or uncouples while driving?
A.Compressed air from the yellow line rushes into the red line, keeping both vehicles operating normally
B.The trailer freewheels with no brakes until the driver presses the foot pedal with maximum force
C.The towing vehicle's engine automatically cuts fuel injection and brings the vehicle to an instant halt
D.The trailer's emergency valve senses the pressure drop and brakes the trailer fully
Explanation: A sudden drop in red line pressure causes the trailer relay emergency valve to vent reservoir pressure directly into the trailer brake chambers (or release spring brakes). This causes the trailer to brake vigorously to bring the detached or depressurized unit to a rapid halt.
7Why are overrun brakes (påskjutsbromsar) legally prohibited on trailers with a total weight exceeding 3,500 kg?
A.They generate electrical backfeed that overheats the modern digital tachograph
B.Overrun braking is too slow and crude to control such heavy trailers
C.They require specialized synthetic motor oil that crystallizes in Swedish winter weather
D.They prevent the trailer from ever being reversed without disconnecting the towbar
Explanation: Overrun brakes rely mechanically on the trailer pushing against the towing vehicle during deceleration. For heavy trailers exceeding 3,500 kg, this surge generates hazardous pushing forces, causes slow response times, and risks jackknifing. European and Swedish regulations require continuous power braking (genomgående bromssystem), typically pneumatic, above 3,500 kg.
8During a pre-trip inspection of a drawbar coupling (bygelkoppling/dragögla), how do you confirm that the coupling pin is properly locked?
A.Check that the red air hose can be stretched by at least two meters past the hitch pin
B.Ensure the safety chain is wrapped tightly three times around the truck's rear bumper
C.Verify visually and by touch that the safety indicator pin (säkringsindikator) has dropped into its locked position and the lever cannot be raised
D.Listen for a loud whistle sound from the exhaust pipe when the ignition is switched on
Explanation: Commercial drawbar couplings (such as VBG or Ringfeder couplings) feature a mechanical safety indicator pin (spärrstift/säkringsindikator). The driver must verify that the indicator shows the pin has fully seated through the drawbar eye and that the operating lever is securely latched.
9What handling and safety problem occurs if a center-axle trailer has excessive positive drawbar load (för högt kultryck)?
A.The trailer's pneumatic air tanks vent all compressed air into the atmosphere
B.The trailer's rear axle locks immediately whenever the parking brake is released
C.The truck engine develops excessive manifold vacuum, causing stalling at idle
D.The truck's rear axle is overloaded and the steering axle lightened
Explanation: Excessive downward weight on the tow coupling (högt kultryck) exerts a leverage effect around the truck's rear axle. This severely unloads the front steer axle, leading to diminished steering grip, increased understeer, and tilting the cab backward so headlights blind oncoming drivers.
10A C1 lorry with gross weight 5,200 kg is coupled to a center-axle trailer with actual gross weight 3,800 kg. If the vertical drawbar load (kultryck) resting on the truck's hitch is 200 kg, what is the actual load supported by the trailer's road wheels (axeltryck)?
A.3,800 kg
B.3,600 kg
C.4,000 kg
D.5,400 kg
Explanation: The total gross weight (bruttovikt) of a center-axle trailer (släpkärra) equals the sum of the weight carried on its road wheels (axeltryck) plus the vertical tongue weight supported by the towing vehicle's hitch (kultryck). Subtracting the 200 kg hitch load from the 3,800 kg trailer gross weight leaves 3,600 kg supported on the trailer wheels.

About the Kunskapsprov C1E Exam

Kunskapsprov C1E is the Swedish driving licence theory test for driving a medium truck (category C1) coupled with a heavy trailer (over 750 kg) with a maximum combined vehicle weight (tågtotalvikt) of up to 12,000 kg, or a category B car coupled with a trailer exceeding 3,500 kg up to 12,000 kg. Trafikverket administers the computer-based knowledge test and practical driving test, while Transportstyrelsen sets the driver licensing rules under Körkortslagen (1998:488). The examination covers vehicle knowledge and manoeuvring, environment, traffic safety, traffic rules, and personal conditions. The official test is taken in Swedish. Independent Category C1E practice by OpenExamPrep is an English-language multiple-choice study adaptation, not an official translation or simulation, covering coupling mechanisms, continuous pneumatic brake lines, off-tracking (genande), rear overhang swing-out, jackknifing hazards, axle load distribution, load securing (80% forward / 50% sideways and backward), and Swedish vehicle combination speed limits.

Exam sponsor: Trafikverket Förarprov, with licensing requirements set by Transportstyrelsen. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Computer-based theory test with 60 multiple-choice questions; 55 are scored and 5 are unscored trial questions. One answer option is correct for each question.

Time Limit

40 minutes

Passing Score

44 of 55 scored questions

Exam / Certification Fees

420 SEK daytime; 520 SEK after 18:00 and weekends for C1, C1E, C, and CE theory tests (Trafikverket 2026)

Exam sponsor website

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.

Trafikverket content area

Vehicle Knowledge and Manoeuvring

Coupling equipment (dragstång, vändskiva, kulhandske), dual-line pneumatic brakes (matarledning and manöverledning), continuous braking, breakaway safety devices, suspension, tyres, and axle load distribution

Trafikverket content area

Environment

Fuel-efficient driving with vehicle combinations (sparsam körning), kinetic energy management, aerodynamic drag reduction, engine braking, and tyre rolling resistance

Trafikverket content area

Traffic Safety

Off-tracking (genande) and curve negotiation, rear overhang swing-out, jackknife hazard (fällknivseffekt), combination braking sequences, reversing dynamics, and winter road handling

Trafikverket content area

Traffic Rules

Category C1E licence entitlements, maximum total combination weight (12,000 kg), 80 km/h combination speed limits, lane and overtaking rules, and cargo securing standards

Trafikverket content area

Personal Conditions

Fatigue and alertness, pre-trip vehicle walkaround inspections (säkerhetskontroll), 0.2 promille alcohol limit, medical requirements for the higher categories, and driver responsibility

Preparing for the Kunskapsprov C1E Exam

What You Need to Know

  • Passing score: 44 of 55 scored questions
  • Assessment: Computer-based theory test with 60 multiple-choice questions; 55 are scored and 5 are unscored trial questions. One answer option is correct for each question.
  • Time limit: 40 minutes
  • Exam / certification fees: 420 SEK daytime; 520 SEK after 18:00 and weekends for C1, C1E, C, and CE theory tests (Trafikverket 2026) 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

Kunskapsprov C1E: Suggested Study Strategy

1Memorize key combination numbers: 60 total questions, 55 scored, 44 points to pass, 40-minute limit, 12,000 kg max combination weight, and 80 km/h maximum combination speed.
2Understand the dual pneumatic brake line functions: red line is supply pressure (matarledning), and yellow line is service control pressure (manöverledning).
3Master combination curve dynamics: anticipate off-tracking (genande) by tracking wide into intersections, and watch out for the rear overhang swinging out over pavements.
4Know the load securing formulas: lashing and blocking must withstand at least 80% of cargo weight forward, and 50% sideways and rearward.
5Remember the lane rule for two-way roads with three marked lanes: you may not drive in the lane furthest to the left (Trafikförordningen 3 kap. 8 §).
6Study winter tyre rules: a heavy lorry and its trailers need winter tyres from 10 November to 10 April regardless of road conditions (at least 5 mm tread on the lorry, 1.6 mm on the trailer); behind a car or light lorry, the 1 December to 31 March winter-conditions rule applies.

Frequently Asked Questions

How many questions are on the Swedish Kunskapsprov C1E?

Trafikverket states that C-category and combination theory tests contain 60 questions in total. Five of these are unscored trial questions used to evaluate new test items, so the maximum attainable score is 55 points.

What is the passing score for Kunskapsprov C1E?

You must score at least 44 points out of the 55 scored questions (80%) to pass the category C1E theory examination.

How long do I have to complete Kunskapsprov C1E?

The standard test duration is 40 minutes. Approved candidates with reading difficulties or language needs may be granted extended time (60 minutes) or test with an interpreter (80 minutes).

How much does the C1E theory test cost in 2026?

Trafikverket lists the C1E theory test fee as 420 SEK for daytime appointments on weekdays, and 520 SEK for appointments after 18:00 or on weekends. The photo (120 SEK) and the practical driving test (2,100 SEK for C1E) are billed separately.

How long is a passed C1E theory test valid?

An approved theory test for category C1E is valid for 1 year. The practical driving test (körprov) must be successfully completed within this 1-year period, otherwise the theory test must be retaken.

What vehicles can I drive with a Category C1E licence?

Category C1E entitles you to drive a medium lorry (category C1, maximum total weight between 3,500 kg and 7,500 kg) coupled with a trailer exceeding 750 kg, provided the combined gross vehicle weight (tågtotalvikt) does not exceed 12,000 kg. It also permits driving a Category B vehicle coupled with a trailer exceeding 3,500 kg, as long as the combination weight does not exceed 12,000 kg.

What is the difference between BE, C1E, and CE licences?

Category BE allows a category B car (max 3,500 kg) towing a trailer up to 3,500 kg (max combo 7,000 kg). Category C1E allows a C1 lorry (up to 7,500 kg) or B car with a heavy trailer where the total combination weight does not exceed 12,000 kg. Category CE allows a heavy truck without upper weight limit (Category C) towing trailers of any permitted weight.

Are these official Trafikverket questions?

No. These are independent practice questions authored by OpenExamPrep from Swedish rules and Transportstyrelsen and Trafikverket guidance. The official test is taken in Swedish; this bank is an English-language multiple-choice study adaptation of the same knowledge areas, not an official translation or simulation.