What is the required height for characters on a standard number plate?

The required height for characters on a standard number plate is indeed 79mm. This specification is crucial for ensuring that the characters are easily readable from a distance, which is important for identification purposes by law enforcement and for automated license plate recognition systems. The standard height helps to create uniformity across number plates, making it simpler for all stakeholders, including police officers and the general public, to recognize and interpret vehicle registrations quickly and accurately.

In contrast, the other heights mentioned are not compliant with the established regulations for standard number plates, which are designed to meet visibility and readability requirements on the road. Therefore, understanding the importance of the 79mm height helps reinforce adherence to regulations that support road safety and effective law enforcement activities.