Utah minimum speed is the lowest speed at which a motor vehicle can be operated on public roads or highways in Utah. The general speed limit in Utah is 65 mph on interstate highways and 55 mph on other highways and roads. However, the Utah Department of Transportation (DOT) may set lower speed limits in certain areas. There are three types of minimum speed limits in Utah. The first is the basic minimum speed limit, which is the lowest speed at which a vehicle may legally travel on a road or highway. This limit is usually 55 mph on regular highways and 35 mph on residential streets. The second is the posted minimum speed limit, which is the speed limit posted on signs along the road. This limit is usually lower than the basic minimum speed limit and may vary depending on the specific road or highway. Finally, the third type is the advisory minimum speed limit, which is the lowest speed at which drivers should travel in order to maintain a safe speed for the conditions. This limit is usually lower than the posted limit and may vary depending on the specific road or highway.