Product Feature: Modeller
In order to perform roadway grade modeling in Paramics network, a Gradient (%) can be specified for the selected link. The value is input as a percentage and affects the acceleration and deceleration of all vehicles. The gradient will automatically be calculated if either node is given an elevation (z-coordinate).
The TWOPAS gradient model is based on research from FHWA into gradients for truck/HGV hill climbing. The algorithm takes account of the following characteristics (5 default bandings assumed):
The TWOPAS gradient model is based on research from FHWA into gradients for truck/HGV hill climbing. The algorithm takes account of the following characteristics (5 default bandings assumed):
- Vehicle weight,
- Frontal area,
- Power to weight ratio,
- Node elevation,
- gradient and Net horse power.
UPDATED:
October 10, 2019