The Traffic Measurements layer displays real-time traffic data.
The real-time data registered by different sensors are not harmonized through some criteria. Rather, the direct measurements are collected by different data providers.
You can indeed choose one of two data visualization modalities by using the Trafficstate Type list menu in the LAYER OPTION area:
- Data collected by one provider only
- Data collected by all providers at once.
The data collected is used to get a specific measurement of the ratio V/V0, associated with a specific color.
The different colors represent different partitions of the ratio V/V0.
V is the speed measured, while V0 is the free flow speed, that is the speed that you can reach on a specific street or link without traffic constraints (free flow).
LAYER INFO
| Info type | Description |
|---|---|
|
The traffic flow is heavily blocked. |
|
The traffic flow proceeds slowly. |
|
The traffic flow is almost smooth. |
|
The traffic flow is smooth. |
|
The traffic flow is proceeding at a very high speed, very close to the limit of V0. |
|
Traffic data is not available. |
LAYER OPTIONS
| Option type | Description |
|---|---|
| Theme |
It allows you to choose a set of graphic themes to represent the layer entities. |
| Traffic State Type |
Allows you to choose a data provider from the set of available providers. If you select ---, the maps shows data from all providers at once. The set of available values depends on how your Optima instance is configured. |
Measured Speeds layer attributes
- Click on a street (or link) to open the pop-up window with detailed information about the real speed attributes.
The street (or link) selected is colored with a purple bold line.
Other common operations
- Select the layer in the ACTIVE LAYERS list.
- Click the
List icon.
A pop-up window with a list of items opens. Every item represents a street (or link), characterized by a set of attributes.
Other operations are available for the layer (→ Operations on layers).