When a combination vehicle goes around a corner:
Answers
The vehicle must use at least two lanes.
The front and rear wheels will move in different paths.
It is best to allow the rear wheels to drive over the curb.
The Correct Answer and Explanation is :
The correct answer is: The front and rear wheels will move in different paths.
Explanation:
When a combination vehicle, such as a tractor-trailer or a semi-truck, navigates a corner, the front and rear wheels follow different paths due to the articulation of the vehicle. This happens because the vehicle is made up of multiple segments connected by a pivot point, usually at the rear of the tractor and the front of the trailer. This articulated connection causes the rear wheels of the trailer to trace a different path than the front wheels of the truck, creating a “sweeping” effect.
Why This Matters:
Understanding the movement of combination vehicles around corners is crucial for safe driving and maneuvering. The front wheels of the tractor move in a circular path around the steering axle, while the rear wheels of the trailer follow a path that is offset. This discrepancy means that when a truck turns, the rear wheels of the trailer may not follow the same path as the front wheels. Instead, they tend to “cut” the corner, moving inside the path of the front wheels. This can create a risk of the rear wheels striking curbs, pedestrians, or other vehicles in adjacent lanes if not properly managed.
Safety Considerations:
- Awareness of the Vehicle’s Size and Path: Drivers of combination vehicles must be aware that the rear wheels will track a different path and anticipate the need for wider turns, especially when turning at intersections or into parking lots.
- Avoiding Curbing: It is not advisable for the rear wheels to drive over the curb as it can damage the vehicle, the curb, and potentially pose a danger to nearby pedestrians or vehicles. Instead, drivers should take extra care to turn widely and allow for sufficient space to avoid encroaching on sidewalks or adjacent lanes.
Conclusion:
Driving a combination vehicle requires a heightened sense of spatial awareness and control, especially when negotiating turns. Knowing that the front and rear wheels will take different paths can help drivers make safer and more effective maneuvers, ultimately preventing accidents and maintaining control of their vehicle.