Original sources and research for this video:
This hidden Swedish design is very mindful
Prisma Case Study from Kenneth Österlin's book - Design i Fokus (Swedish) - pages 8-9
Huge thank you to Kenneth Österlin - https://designinfo.se/ or https://skissbox.se/
Signallåda övergångsställe [skiss]
Projektpärm för Prisma teknik [referensmaterial]
Prisma Daps Touch, Video of how it works
Prisma Daps Pedestrian signal overview | PrismaTibro
Installation manual PDF in English for the Prisma Daps series
Installation manual PDF in English for the Prisma Daps series
Current: ÖNORM V 2100:2014 06 01