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This is the lateral and/or longitudinal area that separates road user flow from the work space or an unsafe area, and might provide some recovery space for an errant vehicle. A) Buffer Zone B) Safety Zone C) Transition Zone D) Merge Zone

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Final answer:

The term for the space that separates road user flow from a work space or an unsafe area, and which provides recovery space for errant vehicles, is known as a Buffer Zone. It is different from Safety, Transition, and Merge zones.

Step-by-step explanation:

The term that describes the lateral and/or longitudinal area that separates road user flow from the work space or an unsafe area is known as a Buffer Zone. This provides some recovery space for an errant vehicle. A safety zone pertains to a designated area for the protection of pedestrians, while transition and merge zones pertain to areas where vehicles change lanes or combine their flow. For example, in a city like New York (as displayed in Figure 3.2), walkers and drivers must follow two-dimensional, zigzagged paths along roads and sidewalks, where buffer zones play an important role in managing traffic and ensuring safety.

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