Final answer:
A parkway provides metropolitan and city continuity and unity with limited access and special features at major intersections.
Step-by-step explanation:
The subject of this question falls under Social Studies, specifically within the topic of urban planning and transportation systems.
A metropolitan or city route that provides continuity and unity, limited access, some channelized grade crossings and signals at major intersections, and where parking is prohibited is called a parkway.
For example, a parkway like the Grand Concourse in the Bronx, New York, is designed to provide a scenic and uninterrupted route for motorists, with limited entry and exit points to maintain flow and avoid congestion.