: Typically, urban alleys are around 18 feet wide to allow for service vehicles like trash trucks while maintaining a more squarish block layout.
Designing a "proper" alleyway depends on whether you are looking at urban planning or livestock management. In an urban context, a proper alleyway is a functional right-of-way that facilitates essential services like waste removal and deliveries while providing airflow and light to the backs of buildings. In agricultural settings, it refers to a "race" or narrow corridor designed to safely guide and restrain animals for medical care or processing. Alleyway
For cattle or horse handling, "proper" design focuses on animal behavior to ensure calm and efficient movement. Pens question: exit alleyway width? | CattleToday.com : Typically, urban alleys are around 18 feet