What is the main north-south street in a Roman town called?

The main north-south street in a Roman town is referred to as the Cardo. This term originates from the Latin word "cardo," which means "hinge," reflecting the street's pivotal role in the layout of Roman cities. The Cardo intersected with the Decumanus, which is the main east-west street, and this intersection typically served as an important public space or forum in Roman urban planning.

In Roman towns, the strategic orientation of the Cardo allowed for efficient movement and organization of trade and traffic, effectively dividing the city into different zones. Streets like the Cardo are crucial in understanding urban development and infrastructure in ancient Rome, as they were often lined with shops and public buildings, contributing to the economic activity of the town.

The other terms refer to different elements of urban design and layout in Roman cities but do not pertain specifically to the north-south orientation.