What is the definition of a collision?

The definition of a collision is best understood through the concept of two objects occupying the same space at the same time. This means that for a collision to occur, the paths of the two objects must intersect, leading to contact or impact. In the context of driving and vehicle operation, this typically describes situations such as cars bumping into each other, bicycles hitting pedestrians, or any scenario where physical interaction causes a change in the movement or state of the involved objects.

The other options describe related concepts but do not capture the essential criteria for a collision. For example, having two objects occupy different spaces at the same time does not imply any interaction between them. Similarly, referencing speed or specific motion does not inherently signify a collision if the two objects do not meet in the same space. Thus, the correct definition clearly emphasizes the necessity of shared spatial occupancy, which is fundamental to understanding collisions in driving and safety contexts.