Weigh in Motion (WIM)

Overview 

• The Weigh in Motion (WIM) application exists to support agency management of weigh stations and over-height stations. 
• Depending on the data sources available to you, you can: 
• Monitor live traffic for violations – commonly used by patrol officers in the field 
• Review historic data – commonly used for performance reporting 
• Generate documentation for detailed review and for violation notices 
•  Many of these features have various options and complex interactions, described below.

Station List (Landing Page) 

• This page consists of (1) a list of stations and (2) a map showing their locations. 
  • The list of stations includes: 
    • A filter selection for All sites, Maryland sites only, or Ohio sites only. 
    • Their current status. 
      • Stations with this icon do not have a live data feed.
      • Stations with this icon have a live data feed.
    • The location name. This is agency defined and usually includes the road name and nearest intersection or similar description. 
    • The direction of travel that is monitored.  This refers to which side of a road the station exists and should be interpreted as N = “northbound”.  These are always cardinal directions of N, S, E, or W. If the data doesn’t specify a single side of the road, the station could show N/S or E/W.  Cardinal directions are approximate and should be easily interpretable using the map. 
    • A “Live station” button which links to that station’s real-time data. 
    • An “Analytics” button which links to that station’s historical data.

Weigh Station Sites 

Weigh Station Map

Live Monitor Page

• This page shows vehicles passing a single weigh station. 
• You can select any station of interest. 
• Vehicles in violation play an alert sound to notify an enforcement officer. 
• Vehicles in violation are also shown on a red background for easy identification. 
• The violation type is recorded in the upper left of the vehicle image. 
• You can adjust the settings to mute the alert, focus only on certain types of violations, or only certain FHA vehicle classes. 
• An image of the vehicle, its basic info, and an axle diagram are provided for further detailed reference.

Live Monitor Setting Page

Analytics Page

• This page consists of (1) a query form, and (2) the results. 
• The query form allows you to specify: 
  • A date range 
  • A state 
  • One or more stations 
    • NOTE: Stations with no data available are grey and include an info icon with specific details about why there is a problem. 
• Travel lane 
• Vehicle class 
• Vehicle weight 
• Vehicle axle weight 
• Violation and related flags

Analytics Results Page

• The Results page includes the ability to select what kind of output you would like, including 10 different output types, some with variations to show hourly or daily results: 
  1. Vehicle count by date and hour (heatmap)
  2. Vehicle count by speed
  3. Vehicle count by class
  4. Vehicle count by date 
  5. Vehicle count by day of week
  6. Vehicle count by hour of day
  7. Table of vehicles
  8. Table of vehicles with axles

  9. Class count by 

     a. date

     b. hour

  10. Speed count by 

      a. date 

      b. hour

• All results allow a CSV export, and all graphs allow capturing a screenshot. 
• Individual report elements are normally selectable but have a display limit of 500 results.

1. Vehicle count by date and hour (heatmap) 

2. Vehicle count by speed 

3. Vehicle count by class 

4. Vehicle count by date 

5. Vehicle count by day of week 

6. Vehicle count by hour of day

7. Table of vehicles 

8. Table of vehicles with axles 

9.a. Class Count by Date

9.b. Class Count by Hour

10.a. Speed Count by Date

10.b. Speed Count by Hour