: 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.
A well-designed urban alleyway balances functionality with community safety.
: Most jurisdictions prohibit obstructing an alley with objects like fences, debris, or parked cars to ensure they remain clear for emergency access.