Introducing Rodel
Entry Capacity
Calibration
Arrival Turning Flows
Traffic Flows
Flow Modifiers
Average Daily Traffic
Time-sliced Profile
Geometric Parameters
Approach Geometry
Entry Geometry
Circulating Geometry
Diameter D
Circulating Width C
Circulating Lanes nc
Exit Geometry
Capacity Modifiers
Calibration
Bypass Geometry
Bypass Approach
Bypass Entry
Bypass Exit
Accidents
Accident Models
Accident Geometry
Economics
Geometry > Circulating Geometry
Circulating Geometry
- Circulating Geometry
- The Circulating Geometry has three parameters
- Diameter D
- The diameter D is the outer diameter or Inscribed Circle Diameter.
- Circulating Width C
- The circulating width only affects capacity as it defines the number of circulating streams so neither the HCM nor the geometric capacity models use C for capacity estimation directly. C only affects capacity if it changes the number of circulating traffic streams.
- Circulating Lanes nc
- This section must be read in conjunction with the one above on circulating width C.
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