Here is a quick share of an article on traffic safety from Todd Litman of the Victoria Transport Policy Institute. Source: Applying the New Traffic Safety Paradigm
In the article, the author discusses the use of 'exposure' as a measure of risk in as far as safety is concerned. The variable 'vehicle miles traveled' or in our case 'vehicle kilometers traveled' may be considered a risk factor. That is, higher or more VMT or VKT may lead to more crashes and casualties (and additionally damage to property). The objective is to reduce VMT or VKT in order to improve traffic safety.
To quote from the article:
"The new traffic safety paradigm recognizes the additional risk resulting from increases in low-risk vehicle travel and so favors strategies that reduce total vehicle-miles such as improved public transit services with free service for students, efficient school parking pricing to discourage driving, and more compact communities that reduce distances between homes and schools. In addition to reducing traffic risk these strategies also reduce household costs, traffic congestion and pollution problems making them win-win solutions. "
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