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SAE J2735-Draft-Rev15 [issued: 01-30-07]
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153 -
This is an SAE Motor Vehicle Council draft document of the DSRC committee, subject to change.
In order to determine if an “emergency braking” message is relevant to the listening vehicle, the listening vehicle
needs to know the relative location from which the message originated (e.g., front, rear, left, right). This can be
done based on its GPS information and the GPS information of the braking vehicle. In this simple near-term
application scenario, an “emergency braking” message from a vehicle may not necessarily apply to a vehicle
traveling in an adjacent lane.
Sensors and Other System Needs
A map database, where available, may help to provide specific, relevant information related to current road
segments. This could allow, for example, intersection geometry or road curvature to be taken into account when an
application host vehicle evaluates “emergency braking message” to see if an alert to the driver is necessary.