A select group of people in Easingwold, near York will receive a text message on Wednesday giving them an advanced warning of a disaster.
The project is part of a Government pilot scheme to see how effective the system is.
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The four people who were all related were killed on the A64 near Malton as they returned from a wedding in Leeds.
GMB's Ben Shephard is cycling, running and swimming from Whitehaven to Tynemouth to raise money for the Children's Heart Unit Fund (CHUF).
Grandfather Stewart Anderson, 54, died after an incident at Durham's Loveshack nightclub in Durham City