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The digital evidence is often the silent witness to an accident. Our goal is to provide a voice for this silent witness by providing relevant vehicle data that shows the true events of a crash.

What is an event data recorder?

The event data recorder logs vehicle data seconds before and seconds after a possible event. An event is usually detected by excessive deceleration of the vehicle. This does not necessarily have to be an accident. An event could also be harsh deceleration or harsh braking.

What is an event data recorder?

Why use an event data recorder?

Studies show that event recorders can save lives and protect your trucking company’s most valuable assets: your drivers and passengers. The technology in an Event
Data Recorder makes it possible to analyse an event after it happened. Serious accidents can be prevented in the future by telling the driver about his risky behaviour during previous incidents.

What do you need?

edr-incident

All you need is a Squarell interface connected to the vehicle CANbus. A new device profile and a new device configuration file need to be loaded to the device. A modem is needed to send the data. The deceleration value to trigger the event data recorder is adjustable (by the Telematics Service Provider).

  • flex
  • CANcliQ
  • squarell patented datacliq

How does it work?

How does it work?

In this example, the fast decreasing vehicle speed triggered the event data recorder. As shown in the second graph: the accelerator pedal was released prior to the event, and the driver was braking during the event.

Pre-event message
Sent from 30 seconds before the event
Post-event message
Sent 30 seconds after the event
Parameters:

  • UTC time of event
  • Brake switch (on/off)
  • Clutch switch (on/off)
  • Accelerator pedal position (%)
  • Vehicle speed (MPH)
  • Engine speed (RPM)
  • Crash status (airbag/seatbelt/indicators/etc.)*
  • Acceleration/deceleration value (that triggered the incident event)
Parameters:

  • UTC time of event
  • Brake switch (on/off)
  • Clutch switch (on/off)
  • Accelerator pedal position (%)
  • Vehicle speed (MPH)
  • Engine speed (RPM)
  • Crash status (airbag/seatbelt/indicators/etc.)*

* When available on CANbus