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What type of Information is contained in a PDU?

The user driving data PDU’s that consists of: 

Type 3 GPS positional data at 1Hz

Type 3 Crash data at 100Hz

Other Type 1 messages (such as heartbeats Journey Starts / ends etc.)

The devices data output is optimised

The PDU payloads are very lean and efficient with no wasted space.

The Type 3 messages are filled up with 1Hz data unit and when it reaches 500Bytes, that PDU is sent to the Cloud, so a Type 3 message can contain many 1Hz samples, this is to reduce the message and packet overhead.

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