What is the maximum speed limit on open highways in New Mexico unless otherwise posted?

In New Mexico, the maximum speed limit on open highways is indeed 75 miles per hour unless otherwise indicated by posted signs. This higher limit reflects the design of many of the state's highways, which are constructed to accommodate faster travel while ensuring safety on less congested roadways. The speed limit may be raised to 75 mph on certain stretches to enhance traffic flow and efficiency, acknowledging that drivers should be able to travel at a reasonable speed on well-maintained highways.

Roads that are appropriate for this speed typically have features such as multiple lanes, clear sight lines, and minimal intersections, which contribute to safer driving conditions at higher speeds. However, it's essential to always be aware of and adhere to specific posted speed limits, as they may vary based on local conditions, construction, or other factors that could affect safe driving. In contrast, lower speed limits, like those found in urban areas or near schools, are set to enhance safety in more congested environments.