urban activity system 1
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CHAPTER - 2
URBAN STRUCTURE
2.1 Urban Activity System
Many observers of urban areas have pointed out that bulk of urban activities occurs in
ordered hierarchies. Certain activities, such as elementary schools and small neighborhood
shopping centers, exist at a scale that serves only local areas. Other type of urban activities exists
in large concentrations and may serve an entire urban region. Examples of region wide activities
include major cultural facilities, Post secondary education facilities, specialized retail trade
outlets, and certain types of personal service.
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Fig
diagram
and the
re 2.1 sho
indicates a
umber of tr
Figure:
s the wee
proximatel
ps made thr
2.1 Weekly
kly activity
the length
oughout the
household
pattern fo
and locatio
week.
activity Pa
the mem
n of each t
tern
ers of one
ip, the mo
household.
e of travel
o
This
used,
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2.2 Urb
T
land bas
Average
Time.
F
average
through
road tra
superior
control o
Avg.
Speed
(mph)
n Moveme
ransport Sy
d activities.
Speed of tr
igure 2.3 s
peed of tra
ecreased s
el has been
to travel al
f access.
t Hierarc
stems Provi
There is a
Fig
vel by mas
ows that th
el on these
ation spaci
illustrated
ong arterial
ies:
e two fund
onflict bet
re 2.3: Top
s transit vs
e station sp
lines. In oth
g, the effic
hat the effi
and collect
mental fun
een these t
speed of v
op Vehicle
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er words, as
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iency of tr
or roads wi
tions and t
o function
hicle (mph
Speed, Stat
id transit l
access to a
vement de
vel along
thout contr
ese move
.
)
on Spacing
nes control
rapid transi
reases. A
ontrolled a
l of access
ent and acc
and Station
ing factor i
line is incr
imilar effe
cess roads
, or with li
ss to
Stop
n the
eased
t for
is far
ited