Signalized nodes

From the drop-down list, select the desired option.

Circular 212 Operations and Circular 212 Planning

These methods adopt the saturation flow rate from row E of the Planning or Operations table or from a common table (Fundamentals: Signalized nodes).

Note

For the Circular options, the ideal saturation flow rate is not subject to changes.

HCM 2000

Node impedances are calculated according to the HCM 2000.

HCM 2010

Node impedances are calculated according to the HCM 2010.

HCM 6th Edition

Node impedances are calculated according to the HCM 6th Edition.

HCM 7th Edition

Node impedances are calculated according to the HCM 7th Edition.

ICU 1

ICU1 (V/S)= (volume / saturation flow rate) + (ICA loss time / SC cycle time)

ICU 2

ICU2 (V/S)= (volume / saturation flow rate) * [ 1 + (1 / [ SC cycle time / ICA loss time) – 1] ) ]

Notes

For ICU options, the user-defined number of vehicles per pocket lane is considered if the option Use number of vehicles has been selected for this lane. If this option has not been selected, the number of vehicles is determined from the length of the pocket lane and the attribute Space per PCU.

If this option has been selected, enter a value which is used as the user-defined maximum turn penalty at the node.

In the list, select the percentile (70, 85, 90, 95 or 98) which is to be saved in turn attribute ICA average back of queue for signalized junctions.

User-defined value for HCM calculation method. Maximum number of vehicles that can drive in an ideal scenario.

Note

We recommend a value between 1,600 and 2,000 vehicles per lane/h.

User-defined value for ICU1 calculation method. Maximum number of vehicles that can drive in an ideal scenario.

Note

We recommend a value between 1,600 and 2,000 vehicles per lane/h.

User-defined value for ICU2 calculation method. Maximum number of vehicles that can drive in an ideal scenario.

Note

We recommend a value between 1,600 and 2,000 vehicles per lane/h.