Two or more penal sentences that are served simultaneously: the total
sentence period equals the duration of the longest sentence. Sentences that may all be served at the same time, with the longest period controlling, are concurrent sentences. Judges may sentence concurrently out of compassion, plea bargaining, or the fact that the several crimes are interrelated. When the sentences run one after the other, they are consecutive sentences.
In contrast, consecutive sentences run one after another: the total sentence period is the sum of the durations of all sentences.
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Accepted Answer Date Created: December 16,2014