
The project was inspired by the suicide of his brother, in 2017.
Mr Keating said the ute signing provided an opportunity for people to talk about their loved ones "and maybe get some closure".
"We don't talk enough. There's plenty of awareness, but real prevention starts when we all start talking about the real issues."
He said he had collected more than 500 names since he started the project in January.
Since then, he has travelled as far north as Waitangi and was now headed to Invercargill, before returning to Christchurch.
He plans to continue the project by visiting car shows and community events around the country.
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