Which road sections have a speed limit of 20 km/h?

[LauraLynn]

Sections with a speed limit of 20 km/h include: entering or exiting non-motorized lanes; passing through railway crossings, sharp curves, narrow roads, and narrow bridges; when encountering fog, rain, snow, dust, or hail with visibility less than 50 meters; roads without center lines and sections near schools; and highway toll booth entrances/exits. Safety improvement: According to data, the survival rate when hit by a vehicle traveling at 80 km/h is almost zero. When hit by a vehicle at 45 km/h, the survival rate is 50%, while reducing the speed to 30 km/h or below increases the survival rate to 90%. Noise reduction: Decreasing speed from 50 km/h to 30 km/h reduces noise by 3 decibels, which is a significant reduction.