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Getting Started - Page 7 of 7 |
ID# C5GS007 |
Getting
Started
Technical Issues
The computational
procedures of the Highway Capacity Manual are complex, often including a
number of default values or assumptions that need to be understood (and
sometimes modified) if the procedures are to be applied correctly to
specific problems.
This case study
presents, and hopefully clarifies, a number of technical issues that often
arise in the application of Chapters 16 and 17 of the HCM. The Exhibit 5-9 lists these issues and identifies which are covered in each of the
problems presented as part of this case study.
|
Technical issue |
Problem in which the issue is covered |
|
Pedestrian
blockage
Queue lengths
Signal vs. TWSC
delay comparison
Actuated signal
control
Pedestrian and
bicycle influences
Exclusive turns
lanes
T-intersection
Minimum pedestrian green
Exclusive pedestrian phase
Adding signal phases
Phase overlapping
Unit extension and k-value
Arrival type and progression factor
Double cycle options
Actuated signal detection
Actuated phase length
Gap time and volume-density
Phase length and v/c ratio
Pedestrian level of service |
1a. TWSC,
existing
1a. TWSC,
existing
1b. TWSC,
existing
1b. Signal,
existing
1b. Signal,
existing
1c. Signal,
improved geometry, future
1c. Signal,
improved geometry, future
2a. Signal,
future
2a. Signal,
future
2b. Signal,
future
2b. Signal,
future
2c. Signal,
future
2c. Signal,
future
2c. Signal,
future
3a.
Signal, future
3a.
Signal, future
3a.
Signal, future
3a.
Signal, future
3b.
Signal, future |
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