It's a UI thing.
Most of them set a range so the standard operating speed on a highway is roughly at the top of the gauge. In this way, people can gauge their speed when driving different vehicles my glancing at the position not reading the numbers.
Most of them set a range so the standard operating speed on a highway is roughly at the top of the gauge. In this way, people can gauge their speed when driving different vehicles my glancing at the position not reading the numbers.
2. many cars don't have a linear (circumferential) scale on the analogue display (because they put the "highwy speed" at the top of the semi-circle