Final answer:
The area in the MUTCD used to channel motorists to the open travel lane is called the merge area. This area is designed to facilitate smooth and safe merging of vehicles from one lane to another.
Step-by-step explanation:
In the Manual on Uniform Traffic Control Devices (MUTCD), the area used to channel motorists to the open travel lane is known as the merge area. It is typically indicated by signs, pavement markings, or other traffic control devices. The merge area is designed to facilitate smooth and safe merging of vehicles from one lane to another.
For example, if a freeway has three lanes and each lane is 3 m wide, the merge area would be the space between the lanes where vehicles can safely switch lanes. The size of the merge area can vary depending on factors such as speed limits, traffic volume, and road conditions.
Understanding the merge area is important for traffic engineers and drivers to ensure efficient and safe traffic flow.