How is the legal speed limit indicated to drivers?

The legal speed limit is primarily indicated to drivers through signs placed next to the road. These signs are designed to be clear and visible, allowing drivers to easily see the posted speed limit as they approach and drive along the roadway. The standardization of these signs ensures that drivers can quickly understand the speed regulations for different areas, such as urban zones, rural roads, or school zones.

Other methods, such as electronic speed displays or road markers painted on the ground, can provide additional information or reminders about speed limits but are not the primary method of indicating legal speed limits. Police officers may enforce speed limits and can notify drivers of infractions, but they do not usually indicate what the speed limit is; this responsibility falls to the road signs. Understanding speed limits through these signs is crucial for road safety and compliance with traffic laws.