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After World War II, design changed from pedestrian scale to auto
scale.
The car became the primary form
of transportation, so the design
of spaces focused mainly on providing for vehicular access.
The most important consideration became
the free flow of traffic, and new development was therefore built for the
scale of people traveling in cars.
Design modifications made for auto scale
include signs that are larger…
…and taller…
…so they can be seen from far away…
…and when we’re driving fast.
Windows and window
displays have become less important.
Advances
in technology such as air conditioning mean that we don’t
require windows for air circulation.
Stores don’t need to have window displays because people
are driving to get there, not walking by.
It’s cheaper and easier to build a large
one-story building than a multi-story building.
Individual identity and regional architecture are seldom a
consideration.
Many of our new commercial
buildings are constructed by national
chains and franchises, and they are interested in a single, homogenized look that can be
recognized anywhere, creating
“anyplace” in the country.
The buildings are designed for function
only; low cost of design, materials and construction; and a short life
expectancy.
The
parking lot replaces the street and block as the primary orientation for the building. Zoning
codes were changed to reflect the importance of providing vehicle access to a parking lot. The codes usually
require large
building setbacks which places parking in front of the building.
Now it is the accepted marketing
practice to provide drivers with a view of “plenty of free parking” so the parking lot is in front…and
BIG!
Each
building therefore becomes an island “pod” of development floating in its own sea of asphalt parking, so there is no
longer a relationship between a building, neighboring buildings and
the street.
The
comfortable and inviting streetscape
has vanished, leaving places that are bleak and stark.
The
parking lot is often a confusing visual tangle of where to look for cars and pedestrians since there are no
streets and blocks to organize and separate traffic flow and pedestrian movement. Painted lane markers and directional arrows in parking lots can be
ignored easily to take short cuts, and it can be a chaotic free-for-all during
busy times.
Pedestrians become pesky obstructions as
we try to navigate our way through the parking lot. The
irony of this design pattern is that once we park our cars at our destination, all of a sudden we
become pedestrians and
are subject to the danger of being overlooked by people driving.
Trees
and landscaping are not an important part of most shopping centers.
There
is usually no outside space that feels welcoming to the public in newer commercial developments, so
there is no gathering place for visiting, celebrations or public memory. Is a parking lot the place for a parade? NO!--
It belongs on Main Street!
All
these changes to our buildings and streetscape have worked together to create a new type of
development. Many zoning codes call it “highway commercial;” it’s more commonly known
as “strip development.”
Now
we’ll look at how we build our streets.
The
pedestrian-scale block is the central element of the traditional community street pattern. Before
World War II, streets were usually built to intersect with one another at regular intervals to form an interconnected network made up of
individual blocks. In the mountains or areas with geographic
constraints such as rivers, the
block pattern is less regular.
Streets
were also built with sidewalks and crosswalks, so pedestrians were on an “equal footing” with cars
and trolleys.
One
major advantage of the network block pattern is that it is predictable. In
town, drivers know
where to expect to see other cars, cyclists and pedestrians.
Pedestrians and cyclists know where they are supposed to be and have an expectation
of safety if they travel there.
Another
advantage is that there are many ways to travel from one place to another.
With the interconnected block network,
if one road is congested there
are alternate routes available.
Landscaping
with large canopy trees was an important element in street design and construction in the early
20th century.
Although they were small when
planted, the trees were carefully chosen so they would form a
canopy overhead when they matured.
We still benefit from this foresight in
the older parts of our communities today.
However, after World
War II road design changed.
Instead of accommodating pedestrians,
transit and cars equally, the
focus changed to moving vehicular traffic as the top priority; traffic engineers call this
“mobility.”
This means that streets rarely have
sidewalks and cross walks, and most traffic signals are not
timed to allow pedestrians to cross the street.
The
interconnected block network where most left turns took place at intersections has been changed
to multi-lane roads with center turn lanes.
And
each business wants access to the traffic traveling by, which leads to multiple entrances and exits. This
slows down traffic, causing confusion
and congestion in the center turn lane.
It also is difficult
for cars trying to turn left from a business onto a multi-lane road.
Thus,
constructing more lanes has created more congestion and slower traffic—which is contrary to
the original idea that wider roads with more lanes equals better traffic flow.
The
interconnected block network consisting of many two-lane roads with on-street parking and slower
travel speeds has been changed to a few major multi-lane roads where parking is
prohibited and speed limits are higher.
Large-canopy
shade trees are rarely planted on high-volume, higher speed arterial roads—those with speed
limits 35 mph and higher—because
traffic engineers
view them as hazards.
These
newer roads are noisy, hostile and dangerous places to be unless we are in a car. This
means that even for short trips—“just across the street” or “next door”—we have to be
in a car.
With
all these changes in road design, it is becoming increasingly dangerous, inconvenient, and unpleasant to
travel to most places unless we are in
a car.
As a result, it can feel like we’re
spending more and more of our time in a car, and traffic
statistics prove in fact that we are.
This graph
compares the statewide rates of increase for population and vehicle miles
traveled; you can see how dramatic the
increase has been for VMT, and how that rate has accelerated in the past few
years. In fact, DOT statistics show that the current rate of increase in VMT is
now 3.8 times the rate of population
growth.
In
our desire to accommodate the needs of drivers, we have let cars overwhelm too many of our places.
What can we do to make better places
that people and cars can share?
Many
of the elements that create “anyplaces” are part of most typical zoning codes and road design
standards. The solution goes beyond merely changing a single element…
…such
as requiring parking lot landscaping for example, although that is one part of the answer.
Here
are some examples of tools available to help us begin the task of addressing codes and design
standards, and some of the communities who have started the process.
It is possible to design buildings that fit in with
neighboring structures and are oriented towards pedestrians.
Design
codes can ensure that buildings have pedestrian-scale design features such as windows, ornamentation,
articulation and landscaping to make the community more walkable.
The City of Hendersonville, NC recently amended its zoning ordinance to
establish a new zone of Central Mixed Use.
It stresses “sensitivity to urban design,
pedestrian environment, urban
open spaces and streetscapes.”
The Town of Cary, NC adopted design
guidelines in the fall of 2001. They revolve
around implementing seven design principles:
create human scale, create sense of place, connect uses, provide
transitions, reduce parking impacts, plan for pedestrians, bicyclists and
transit users, and provide open space.
The guidelines are now being used by the Town to review new projects.
The
City of Raleigh, NC has also adopted design guidelines. They address site, streets, streetscapes and building design and “are
intended to bring order, clarity
and a pleasing harmony to the public realm of towns and cities.”
It
is also possible to build large-scale developments such as multi-family housing and shopping centers
that welcome both pedestrians and motorists—these are apartment
buildings.
These pictures are from the Fort
Collins, Colorado “Community Design Solutions” document, which
narrates their land use code standards.
An
innovation in the code is the “street-like parking lot drive.” Here is the site plan…
..and
here is the “as-built” result.
One
requirement of the code is to make sure that pedestrians have a clear travel way in the parking lot;
here is the sketch…
…and
this is the completed construction. The
code requires that there be a difference
in color and texture between the parking lot pavement and the material for the pedestrian
way.
The
land use code lays out comprehensive design specifications and guidelines to ensure that the needs of
pedestrians, cyclists and motorists are met…
…while
creating “places” that are comfortable and inviting.
We can build roads
that meet the needs of motorists, pedestrians and cyclists.
NCDOT has developed road standards for
streets in traditional neighborhood
developments. The intent is to
“encourage walking and
biking, enhance transit service opportunities, and improve traffic safety through
promoting low speed, cautious driving
while fully accommodating the needs of pedestrians and bicyclists.”
The
Center for Livable Communities, an initiative of the Local Government Commission in California, has
published a similar guidebook entitled “Healthy Neighborhood Street Design Guidelines.”
Its
standards are intended to serve for streets in all kinds of developments, not just for traditional
neighborhoods.
Access
management is also part of the answer.
The Northwest
Regional Planning
Commission in St. Albans, Vermont has published a guidebook on this topic.
These
illustrations show how it is possible to have buildings that line up along the street, creating a
streetscape. The parking lots are placed at the side or rear of the building.
The
sites can be designed in such a way so that the parking lots line up in the rear and inter-connect. This
creates an internal collector road, allowing
for right-in/right-out turns on the main road and providing opportunities for left turns
from the collector road at intersections.
more
places like this…
…or
this?