The transition area as defined by the Manual on Uniform Traffic Control Devices for Streets and Highways is:

The transition area, as defined by the Manual on Uniform Traffic Control Devices for Streets and Highways, specifically refers to the section of roadway where lane changes and closures are made. This area serves a crucial purpose in managing traffic flow and ensuring the safety of both drivers and workers by providing a clear indication of upcoming changes in the road layout, such as lane shifts or the merging of lanes.

This area is designed to allow vehicles enough distance to safely navigate these changes while still maintaining a flow of traffic. It is critical for drivers to understand and recognize the transition area, as it typically includes warning signs and markings to alert them to the adjustments ahead.

A focus on this definition helps to underscore the importance of traffic control devices and proper communication to drivers in transition zones, ultimately enhancing roadway safety and efficiency during construction or emergency operations.