The overall methodology for analysis, modeling, and simulation of the I-210 corridor looks like this:
As the diagram illustrates, the high-level process is:
Assess operations on the corridor. This information is drawn from the Corridor Description document and other corridor data. This step includes:
|2||Select a modeling approach and create a model to capture existing corridor operations.|
|3||Select scenarios that are representative of relevant transportation challenges. (Based on project scope, the current AMS effort focuses on incidents and incident management.)|
|4||Select feasible management strategies and control interventions to address the scenarios, using ramp meters, intersection signals, and the managed routing of travelers.|
|5||Run simulations to calculate performance metrics and measure effects of scenarios and interventions identified in steps 3 and 4.|
|6||Assess the infrastructure costs (capital, operations/maintenance) of implementing the selected strategies.|
|7||Evaluate the benefits gained from the various strategies against the costs of implementing them.|
In practice, the execution of AMS is not a linear process; many of the key steps are performed in parallel. For example, model calibration is an iterative process composed of several steps:
- Run the simulation as in step 5.
- Compare with data obtained in step 1.
- Reassess the trustworthiness of the data.
- Make adjustments to the model in step 2.