Stop Arm Camera 2: Viewing Events

The Stop Arm Camera 2 supports school transportation safety by automatically recognizing, capturing, and storing evidence of vehicles passing a bus that has opened its stop arm. 

How it works

Opening the bus's stop arm triggers the camera to search for passing vehicles through its wide-angle lens. The camera displays a "SARM" notification in the bottom left corner of the captured image to signify that the stop arm is open.

If a vehicle passes the bus, the camera automatically recognizes it, creates a stop arm violation event, and stores the evidence of the passing. This is identified in the camera image by a "V" in the bottom left corner. 

Once the stop arm is closed, the evidence of any stop arm violations is transferred as unique event folders to the "/StopArm" folder on the Ranger DVR, 

What is in an event folder? 

Each violation generates a unique "Event ID," which is used to create the folder and store the video, image, and metadata evidence of the violation event. The Event ID is a unique identification number produced from the device's serial number, date, and the sequential number of the event.

Example Event ID (Folder Name): 2307SA0001202410220002

• • 2307SA0001 - Camera serial number
  • 20241022 - Date of event: October 22, 2024
  • 0002 - Event number for the day

Example Folder contents: 

• 2307SA0001202410220002.mp4 - Wide-angle video of the event. 
• 2307SA0001202410220002_forward.mp4 - Forward-facing license plate video of the event. 
• 2307SA0001202410220002_rearward.mp4 - Rearward-facing license plate video of the event.
• 2307SA0001202410220002.json - Metadata file containing all relevant event info in text form. 
• 2307SA0001202410220002_forward.jpg - Forward-facing license plate image (if detected). 
• 2307SA0001202410220002_rearward.jpg - Rearward-facing license plate image (if detected). 

How to view events

Users can view events from the Ranger DVR in three different ways:  

1. CloudConnect software:
   Devices connect to Pro-Vision's CloudConnect software solution automatically upload event folders to the platform (over Wi-Fi or 4G). Users can then review the events from CloudConnect.  See CloudConnect: Viewing Stop Arm Violations to learn more. 
2. Direct Wi-Fi connection:
   Any smart device can connect to the Ranger DVR via Wi-Fi and navigate to the device's website, where the user can view the event folders and live camera footage. For detailed instructions, see the video tutorial Connecting to a DVR via Wi-Fi or the article PD-1902 Ranger DVR: Connecting to the DVR via Wi-Fi. 
   • Once viewing files, open the "StopArm" folder and locate the desired event folder.
     • Example: /StopArm/2307SA0001202410220002
       • Within the event folder, click on the various event files to watch them in the browser.
3. SD card or SSD:
   Users can view event folders by removing the Ranger DVR's storage card or drive and connecting it into a PC. See the video tutorial Accessing Videos from an SD Card or Solid-State Drive or article How to View DVR Video Files on an SD/SSD to learn more. 
   • Once the disk is open on the PC, open the /StopArm folder and locate the desired event folder.
     • Example: /StopArm/2307SA0001202410220002
       • Within the event folder, click on the various event files to watch them in the computers default video player.