Final answer:
The Texas Department of Transportation (TxDOT) has the authority to propose changes to the prima facia speed limit in the State of Texas, which may require the concurrence of the governor.
Step-by-step explanation:
Which of the following agencies has the authority to alter the prima facia speed limit in the State of Texas with concurrence from the governor of the state?
The authority to alter the prima facia speed limit in the State of Texas is typically within the jurisdiction of the Texas Department of Transportation (TxDOT), especially regarding state-maintained roadways and highways. Altering speed limits requires a thorough examination of traffic patterns, safety considerations, and typically involves traffic studies. When significant changes to speed limits are proposed, these may require the approval or concurrence of the governor. Other entities such as the city councils or county commissioners might have authority over local roads.
For example, after reviewing a speed-choice model and cost-benefit analysis such as the one from a 1985 Texas A&M study, they might determine whether a certain area warrants a change in speed limits. However, these changes to the prima facia speed limit would still require the appropriate procedural steps, including the concurrence of higher authority like the governor in some cases.