Defendant appealed the decision of the Pawtucket Municipal Court sustaining the violation of R.I.G.L. 1956 § 31-14-2 (prima facie limits). The defendant introduced paperwork evidence that her cruise control was working properly and testified that she set her cruise control at the posted speed limit prior to being stopped. The citing officer testified that the defendant was speeding according to his radar unit and also testified that the unit had been calibrated recently. The Court held that the trial court’s decision to credit the officer’s testimony over the defendant’s was within its discretion and was not clearly erroneous. Accordingly, the Court affirmed the decision sustaining the charge against the defendant.