I think we need to clear up the meaning of suburb and urban and understand how cities evolved be for we can understand sprawl.
Understanding the difference of what is suburb or urban.
But I thing before we can understand that we must first understand how cities evolved . Here is what I know and you can fill in the missing pieces.
Typical of cities beore 1900
-store front at street level
-people live above the store
-side-walk at the street
-foot traffic
-road 2 or 3 lanes and cars parking on the street in front of the store.
- grid system ( US only )
Typical of cities 1900 to 1940 .
-store front at street level
-people live above the store ( most places in the sun belt cities like Los Angeles built many one story storefront ) possible do to the Mexican architect.
-side-walk at the street
-foot traffic
-road 2 or 3 lanes and cars parking on the street in front of the store.
- grid system ( US only )
Typical of cities 1920 to 1940 .
-store front at street level
-people live above the store ( most places in the sun belt cities like Los Angeles built many one story storefront ) possible do to the Mexican architect.
- some cities tight parking at the back of the store or the side of the store ( small parking less than 30 cars) or use of parking garage.
-side-walk at the street
-foot traffic
-road 2 or 3 lanes and cars parking on the street in front of the store.
- grid system ( US only )
Typical of cities 1950 to now
-Parking lots
-Building in parking lot and pulled back from the street
-side-walk pulled back from the street or in some places no side-walk
-The use of malls and plazas than a storefront
- Lots of parking for cars
-lack of foot traffic
-anti grid system the use of crescent ,courts , dead end streets ,cul-de-sac, curvilinear streets, lots of loops and lollipops .
- Arterial road moderate or high-capacity road which is immediately below a highway level of service. Much like a biological artery, an arterial road carries large volumes of traffic between areas in urban centres. They are noted for their lack of residential entrances directly onto the road or any buildings on the road
-The use of subdivisions and is very big 1.6 KM or 2 KM and its bad for car traffic or foot traffic do to the use of crescent ,courts , dead end streets ,cul-de-sac, curvilinear streets, lots of loops and lollipops ..
-All cars have to go out of the subdivisions to the arterial road to get anywhere to the local store or pizza and so on
-industrial park or office parks
-big 3 or 4 lane arterial roads with boulevard in the center ( 3 or 4 lanes one way and 3 or 4 lanes other way )
- The driving speed on the arterial road is mucher higher do to lack of building on the road and lack of controlled intersections.
- plazas and malls built at intersections by the highway
-fence off subdivision and mandatory use of a fence on arterial road .
The mid 90's to now the use of box stores and power centers at intersections by the highway.
street hierarchy typical of cities 1950 to now
http://www.flickr.com/photos/6110057...n/photostream/
Typical of cities 1900 to 1940
http://www.flickr.com/photos/6109356...n/photostream/