# Signal Coordination

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```					    Signal Coordination Example 1 –
Textbook Prob. 26-2
N

a.    What is the NB Progression Speed?
b.    What is the NB Bandwidth and
Bandwidth Capacity? Assume a
c.    Find SB Bandwidth assuming same
speed as NB progression? What is
the Bandwidth Capacity?
d.    New development  new signalized
driveway to be located between
Intersections 2 and 3.
 Requires 15 sec. of green time.
 Flexibility to locate intersection.
 Where would you place it? Why?
Part (a)

    What is NB Progression
Speed?
   Check the Diagram
   3,000 ft in 60 sec.
    \50 fps
    \34.01 mph
Part (b)

   NB Bandwidth and Capacity?
   Check the diagram
   Bandwidth = 30 seconds
   Number of lanes not given
30 sec.
   Find Bandwidth Capacity
per lane  NL = 1
   Bandwidth Capacity
=(3600×BW×NL)/(h×C)
=(3600×30×1)/(2.0×60) =
900 vphpl
Part (c)

   SB Bandwidth and
Capacity?
 Check the diagram
12 sec.
 Bandwidth = 12 seconds
 Bandwidth Capacity
= (3600×BW×NL)/(h×C)
= (3600×12×1)/(2.0×60)
= 360 vphpl
Part (d)

   Need to place the
driveway where
   It does not interrupt
NB, SB progression
   It has 15 seconds of
green time
   given info

```
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