Querying Highway Data
Using RTMIS, users can query highway data and map, email, or graph the results. To access the query wizard, select 'Highway' from the main page and then select 'Transportation Performance Indicators'. The query wizard will guide users through the process of querying the highway data. Currently, the application is using Pems as its highway data source.
Selecting & Maneuvering Items in Lists
Selecting Items in Lists
To select a single item, click on the item in the list. To select more than one option from a list, depress the CTRL key while clicking on items in the list. To select several consecutive items from the list begin by clicking the first item, then depress the SHIFT key while clicking on the last item of selection. This action will select the first item clicked, the second item clicked, and all items in between.
Unselecting Items in Lists
To unselect a single item, depress the CTRL key while clicking on the item.
Moving Item(s) Between Lists
To move selected items between lists click the single right arrow (">") or single left arrow ("<") button. To move all items, click the double right arrow (">>") or the double left arrow ("<<") button.
Reordering Items in the Selected List
The order of items in a selected list determines the order of the items in the results provided to the user. To move an item in the selected list on the right up, select the item by clicking the item and then click the up arrow ("^") button. To move an item in the selected list on the right down, select the item by clicking the item and then click the down arrow ("v") button.
Data Elements
Summary Techniques
The list below provides the summary techniques (average, sum or count) applied to each loop detector reading element: Average Flow Average Occupancy Average Speed Total VMT (Vehicle Miles Traveled) Total VHT (Vehicle Hours Traveled) Average Q (Quality) Total Travel Time Total Delay Number of Loop Detectors Number of Sample Readings Number of Valid Sample Readings
Grouping Query Results
If "Group Results" is selected, results of the PeMS query is organized by a user specified category type(s). Query results can be grouped by loop detector, county, city, freeway and/or an interval of time (year, quarter, month, week, day and hour). In the following example, the user elected to group results for his/her query by city and by freeway. (Illustrated in Image 1). The output produced from the user's "Group Results" selection is the summarized PeMS data categorized by city and by freeway. (Illustrated in Image 2.)