it's worth noting that speed limits on highways vary from country to country and even within different regions or states. In many places, the speed limit on highways can range from 55 mph (88 km/h) to 75 mph (120 km/h) or higher.
It's important to always adhere to the posted speed limits and drive at a speed that is safe and appropriate for the prevailing conditions. Factors such as traffic volume, weather conditions, visibility, and the state of the road should be taken into consideration when determining a safe driving speed. It's always best to drive responsibly and follow the applicable traffic laws to ensure the safety of yourself and others on the road.