La. Stat. tit. 45 § 189
Current with changes from the 2024 legislative session effective on or before 7/1/2024, from Acts 2,3, 6-535, and 580-647
Every service car shall be supplied and equipped with a speedometer in open view and when any service car is being driven at an unlawful speed, and an accident or a mishap occurs which results in the death of, or injury to, any passenger, such unlawful speed shall be prima facie evidence that the accident or mishap was occasioned by, or resulted through, the negligence of the operator of the service car.
La. R.S. § 45:189