What is the primary purpose of longitudinal buffer space?

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The primary purpose of longitudinal buffer space is to provide a recovery area for errant vehicles. This space is critical for enhancing safety in work zones, as it allows vehicles that may stray from their intended path a chance to regain control without causing collisions. In other words, the longitudinal buffer acts as a cushion or safety zone that can prevent accidents and protect both road users and workers within the construction area.

In contrast, minimizing traffic flow is generally a consideration for highway efficiency rather than safety. Increasing work area size can be a secondary benefit of having buffer space, but it is not the main focus. Reducing construction time is also not directly achieved through the implementation of longitudinal buffer space, as these areas are more about safety than the speed of work completion. Thus, the emphasis on providing a safe recovery area is what makes the option regarding errant vehicles the most accurate choice.

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