Should we be using warning lights on certain peoples helmets to warn us of dangerous situations and allow us to get out of the way.
If so what would be an effective model to use and can they be purchased online.
Also do they need sirens that "Yelp" and "Wail", or do we just let them do that themselves?
If so what would be an effective model to use and can they be purchased online.
Also do they need sirens that "Yelp" and "Wail", or do we just let them do that themselves?

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