Identify and explain the urban street patterns and land-use zones shown in the diagram.

4.1.1: The street pattern at A is a curvilinear or irregular pattern.
4.1.2: The street pattern at B is a grid iron or rectangular pattern.
4.1.3: One historical reason for the grid iron layout (pattern B) is the ease of planning and surveying for new settlements or military camps.
4.1.4: Urban planners choose street pattern A (curvilinear) in modern times to create quieter residential areas by discouraging through traffic.
4.1.5: One characteristic of the land-use zone at C is the presence of high-rise buildings and commercial activities.
4.1.6: The height of buildings decreases from C to the periphery because land values decrease further away from the Central Business District (CBD), making it less economical to build tall structures.
4.1.7: The density of buildings at C is high.