This unit delves into the specifics of driving articulated vehicles, including trailers and semitrailers, essential for your Swiss C/C1 license. We cover safe coupling and uncoupling procedures, the unique dynamics of combination vehicles like off-tracking and rear swing, and crucial strategies to prevent dangerous situations such as jack-knifing. Mastering these principles is vital for both your theory exam and safe road operation.
Browse all lessons that make up Trailers, Semitrailers, Coupling, Articulation and Combination Behaviour. Each lesson focuses on specific topics, learning objectives, and core concepts, helping you build essential knowledge and follow a clear, structured progression toward your study goals in Switzerland.
This lesson defines the common types of trailers used with heavy goods vehicles. It explains the difference between a drawbar trailer (Anhänger), which is towed behind a rigid lorry, and a semitrailer (Sattelanhänger), which is coupled to a tractor unit via a fifth wheel. Understanding these configurations is key to understanding the different handling characteristics of various vehicle combinations.
Coupling and uncoupling are high-risk manoeuvres if not performed correctly. This lesson provides a theoretical, sequential guide to the process, covering aligning the tractor unit, raising the trailer's landing gear, locking the fifth-wheel mechanism onto the kingpin, and performing a 'tug test' to confirm a secure connection. The uncoupling process is also detailed, emphasizing the importance of a firm, level surface.
A secure connection between the tractor and trailer requires linking the braking and electrical systems. This lesson explains the function of the red (emergency) and yellow (service) air lines and the main electrical socket, which powers the trailer's lights and ABS. It outlines the correct, safe sequence for connecting and disconnecting these lines to ensure the trailer's brakes function correctly.
When an articulated vehicle turns, the trailer wheels do not follow the same path as the tractor's front wheels; they take a shortcut, or 'cut-in'. This lesson explains this principle of off-tracking and why the driver must take a wider path when initiating a turn. Failing to account for off-tracking is a common cause of striking kerbs, street furniture, or other vehicles.
A jack-knife occurs when the tractor unit and semitrailer skid and fold in on each other, resulting in a complete loss of control. This lesson explains the primary causes, which include harsh braking (especially while turning) or driving too fast for the conditions, causing the drive axles to lose traction. The key to prevention is smooth driving, anticipating hazards, and adapting speed to road and weather conditions.
When a long vehicle makes a sharp turn, the rear overhang swings out in a wide arc. This lesson illustrates the danger of rear swing, particularly when pulling away from a kerb or turning in confined spaces. Drivers must be aware of this effect and use their mirrors to check for pedestrians, cyclists, or obstacles in the path of the swinging rear of the vehicle or trailer.
The fifth wheel is the critical link between the tractor and semitrailer. This lesson details a visual inspection of the coupling, focusing on ensuring the locking jaws are secure, the safety latch is in place, and there is adequate lubrication on the skid plate. A thorough check of the fifth wheel mechanism is a non-negotiable part of the pre-drive inspection and after every coupling procedure.
Explore high-intent keywords and long-tail search topics learners use when researching Trailers, Semitrailers, Coupling, Articulation and Combination Behaviour. These terms reflect how people search for reliable study materials, structured explanations, and unit-level theory preparation support in Switzerland.
Find clear answers to the most common questions learners ask about Trailers, Semitrailers, Coupling, Articulation and Combination Behaviour. Understand how the unit is organized, what learning goals it supports, and how it contributes to your study progression with structured explanations and practical guidance tailored for learners in Switzerland.
In Switzerland, a trailer is a separate vehicle towed by a rigid vehicle, while a semitrailer is designed to be coupled to a tractor unit, with a portion of its weight resting on the tractor. Understanding this distinction is key for Category C1E and CE licenses, as coupling and driving dynamics differ significantly.
Exam questions often focus on the theoretical steps for connecting and disconnecting the air and electrical lines, as well as securing the fifth wheel and coupling mechanism. It's essential to know the sequence and safety checks involved.
Off-tracking, or 'cut-in', refers to the tendency of the trailer's wheels to follow a path inside the turning radius of the towing vehicle's wheels. This is crucial because the trailer can hit curbs, other vehicles, or obstacles, especially during right turns or in tight spaces. Proper understanding allows drivers to anticipate and manage this phenomenon.
Jack-knifing occurs when the trailer pushes the towing vehicle sideways, forming a sharp angle (like a folded pocketknife). To avoid it, maintain a safe speed, avoid sudden braking or acceleration, especially on slippery surfaces, and ensure the load is correctly distributed. If skidding starts, gently release the brakes and steer in the direction you want to go.
Before driving, you must theoretically verify the coupling is secure, air brake lines are correctly connected and functioning, electrical connections are established, and the trailer's parking brake is released. A visual inspection of the fifth wheel and coupling components is also vital.
This unit focuses on the theoretical knowledge required for the Swiss driving theory exam. While it explains the principles of coupling, uncoupling, and vehicle behaviour, practical driving skills are learned through professional instruction and experience, not within this theoretical course.
All included lessons
Lessons in Trailers, Semitrailers, Coupling, Articulation and Combination Behaviour
See who benefits most from studying Trailers, Semitrailers, Coupling, Articulation and Combination Behaviour. This overview explains how the unit supports different learning needs, what level of knowledge is helpful before starting, and how it fits into the overall study path in Switzerland.
This unit is designed for individuals pursuing their Swiss Category C or C1 driving license, who will be operating heavy goods vehicles with trailers or semitrailers. It is particularly beneficial for learners who need a comprehensive understanding of articulated vehicle dynamics and safe coupling procedures for their theory test.
Begin your structured preparation for the official Swiss driving licence theory test today. Browse our comprehensive curriculum, choose your ideal course, and start mastering essential traffic laws, road signs, and practical driving knowledge with confidence.
Browse Swiss Theory CoursesExplore all units and lessons included in this driving theory course.
Begin your structured preparation for the official Swiss driving licence theory test today. Browse our comprehensive curriculum, choose your ideal course, and start mastering essential traffic laws, road signs, and practical driving knowledge with confidence.
Browse Swiss Theory Courses