“Amsterdam is preparing to lower its speed limits to 30km/hr [18mph]. The city will install almost 5k new speed signs, adjust 170 traffic lights, and take other ‘infrastructural measures.’ It is also launching the slogan: ‘We drive 30 for each other.’”
https://nltimes.nl/2023/10/02/amsterdam-preparing-lower-speed-limit-30-kilometers-per-hour 

 @941f98c8 
Is it to promote biking since even obsolete/antique pedal bikes go faster than 30 kph?