to attract a broad mix of people from all socioeconomic classes, although they were most popular by far with the middle class. The houses in a streetcar suburb were generally narrow in width compared to later homes, and Arts and Crafts movement styles like the California Bungalow and American Foursquare were most popular. These houses were typically purchased by catalog and many of the materials arrived by railcar, with some local touches added as the house was assembled. The earliest streetcar suburbs sometimes had more ornate styles, including late Victorian and Stick. The houses of streetcar suburbs, whatever the style, tended to have prominent front porches, while driveways and built-in garages were rare, reflecting the pedestrian-focused nature of the streets when the houses were initially built. Setbacks between houses were not nearly as small as in older neighborhoods (where they were sometimes nonexistent), but houses were still typically built on lots no wider than 30 to 40 feet. Shops such as groceries, bakeries, and drug stores were usually built near the intersection of streetcar lines, or directly along more heavily traveled routes (otherwise, routes would simply be lined with houses similar to those found in the surrounding neighborhoods). These shops would sometimes be multi-story buildings, with apartments on the upper floors. These provided convenient shopping for household supplies for the surrounding neighborhoods, which could potentially be visited on one's way to or from work. While there were stores near houses, they were not quite as close as in older parts of cities, and they were usually confined to specific streets, representing the beginning of a complete separation between residential and commercial areas in cities. Unlike railroad suburbs, which tended to form in pockets around stations along the interurban line, streetcar suburbs formed continuous corridors stretching outwards from city cores. The streetcar lines themselves were either built on roads that conformed to the grid, or on former turnpikes radiating in all directions from the city, sometimes giving such cities a roughly star-like appearance on maps. Along the lines, developers built rectangular "additions" with homes, usually on small lots, within a five- to ten-minute walk of the streetcar. These were essentially built on the grid plan of the older central cities, and typically spread out in between streetcar lines throughout a city. Streetcar use continued to increase until 1923 when patronage reached 15.7 billion, but it declined in every year after that