Highway speed limits?

 

I am not sure if this has been asked before and I am sorry if it has. I want to set up some speed limit warnings on the major highways i like to use. Is there a way to set up a poi that can alert if I go over the set speed for a couple miles. Like can I set up two poi's on the highway and have the alert be for that stretch of the highway until the speed is changed? I have a nuvi 350. (Love It)

Yes, but........

I believe you can set up one or more POI's with a large radius (proximity) to provide the speed alarm you are asking for, however it will have a large radius and therefore might extend over another highway with a lower speed limit.

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Garmin StreetPilot c530, Mapsource