What is the maximum speed limit on rural highways in Texas unless otherwise posted?

Answer: B — 70 mph

In Texas, the maximum speed limit on rural highways is set at 70 miles per hour unless otherwise posted. This speed is established to enhance the flow of traffic while still ensuring safety on these types of roadways, which are typically wider and less congested than urban roads. Rural highways often accommodate longer distances between stops, allowing for safer and more efficient travel at higher speeds compared to urban environments. It is important for drivers to be aware of posted speed limit signs, as these may indicate lower limits in certain areas due to specific conditions such as construction zones, school zones, or rural communities. Understanding the state's default speed limits helps drivers operate their vehicles safely and legally throughout Texas.