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Two-wheeled vehicles require special attention.

Two-wheeled vehicles, such as bicycles and motorcycles, are structurally more unstable and vulnerable. Due to their agility and reduced dimensions, these drivers can change their trajectory quickly and unpredictably to avoid irregularities in the pavement or obstacles, requiring increased attention and a defensive attitude from other road users. The remaining options are incorrect because two-wheeled vehicles have every right to circulate on public roads, provided they comply with traffic rules. Furthermore, the need for special attention is not restricted to urban areas; it is equally vital on roads outside built-up areas, where speeds are higher and the risks of collision are increased.