G17 – Mandatory minimum speed

Road sign G17 is a mandatory regulatory sign indicating the minimum allowed driving speed on a given road section This sign requires drivers to maintain a speed not lower than the one displayed on the sign Its purpose is to ensure a smooth flow of traffic and to prevent dangerous situations caused by vehicles moving too slowly
The sign is typically used on motorways expressways tunnels or other high-traffic sections where maintaining a minimum speed is essential for traffic safety and flow regularity
Visually the sign is circular with a blue background and white numerals indicating the specific minimum speed in kilometers per hour For example a G17 sign showing 50 means that the minimum allowed speed is 50 kilometers per hour
At the end of the section where this rule applies a G18 sign is placed indicating the end of the mandatory minimum speed
The standard dimensions of the sign are as follows
600 mm for use within populated areas
900 mm for use outside populated areas and on motorways
The main purpose of the G17 sign is to ensure safety by maintaining the minimum required driving speed and to prevent congestion or collisions caused by slow-moving vehicles