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Utah's implied consent law — which holds that drivers automatically consent to chemical testing for alcohol or drugs when operating a vehicle — is updated by this bill in two key ways. It changes the standard for when an officer must order a chemical test from having "grounds to believe" a violation occurred to the lower bar of "reasonable suspicion," and it adds a new requirement that any officer investigating a fatal crash who believes there isn't enough evidence to seek a warrant for a chemical test must first review the case with a senior officer before skipping that step.