je suis tombé dessus par hasard, très spécialisé dans le N mais il y a d’autres choses intéressantes 
https://tramfabriek.co.uk/acc/groefrail.html
Simple, yet very effective, is the grooved rail by the Tramfabriek. Now there is a solution where you are in control to create your own layout with realistic looking tram rails through streets. This all without spending a fortune on inflexible pre-made street plates with bricks and tracks combined.