A summary of Traffic Speed data layers that can be analyzed within Insights.
1.0 Selectable Layers
The following are Traffic Speed data layers that can be selected within Insights including:
- Average Speed
Quantifies the average speed of observed trips along a road segment. - 50th Percentile Speed
Also known as the median speed, where half of the observed vehicles travel at or below this speed, and half travel faster. - 85th Percentile Speed
Quantifies the speed at or below which 85% of observed trips travel along a road segment. - 95th Percentile Speed
Quantifies the speed at or below which 95% of observed trips travel along a road segment.
⚠️NOTE: Only one layer can be selected at a time for analysis.
2.0 Map View
When selecting one of the Traffic Speed layers, the map will color-code the road links based on their speed value across the entire selected time period. For instance, if a customer selects to view data for the month of October 2023 and selects the Average Speed layer, the colors on the road links will represent the Average Speed across the entire month.
Traffic Speed Data Legend
The following categories are used to color the data according to the speed across all Traffic Speed Data layers:
| Category | Values (mph) |
| 1 | <15 mph |
| 2 | 15-24.99 mph |
| 3 | 25-34.99 mph |
| 4 | 35-44.99 mph |
| 5 | 45-54.99 mph |
| 6 | 55-64.99 mph |
| 7 | 65-74.99 mph |
| 8 | 75+ mph |
3.0 Tool Tip
In map view, customers can hover over a road link to highlight it and view key statistics in a Tool Tip pop-up. The pop-up displays speed values for the selected layer by direction.
4.0 Data Panel
While a data layer is selected and visible in the Map View, customers can select individual road segments to bring up the Data Panel which consists of two tabs: the Analytics Tab, and the Details Tab.
4.1 Analytics Tab:
The analytics tab includes data insights on the selected road segment.
4.1.1 Directional Selection:
For roadways that are presented on the map as one link representing both directions of travel, a blue dropdown button will be available at the top of the data pen enabling you to select a specific direction, or the aggregated values of both directions.
4.1.2 Summary Scorecard:
A summary scorecard of Traffic Speed Data across the selected time period will be shown at the top of the data panel (shown below).
4.1.3 Chart:
Shows a heat map of the selected layer value disaggregated to your selected time period. The values within the heat map chart are colored based on the min and max values within the chart across the entire week. Values that appear darker reflect values that are closer to the minimum, and values that are whiter, represent values that are closer to the maximum.
💡Tip: The chart colors are designed to make it easy to quickly pinpoint the periods of the day where values are highest or lowest, as well as at what times those anomalies occur.
4.2 Details Tab:
This includes a summary of meta data for the selected road segment including:
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Road Segment ID: unique ID for the road segment that can be referenced across all Urban SDK data.
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Location: what county the segment resides within
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Functional Class: classifies whether the roadway is a highway, arterial, or local street.
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Length: the length of the road segment in miles.
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Road Name: the name of the road.