Unless othersise specified, all products in this line are made of laser engraved .060" Acrylic.
The modular road system includes one lane roads, two land roads and 4 lane roads. The standard road widths are:
1 lane = .5" (12.7mm)
2 lane = 1" (25.4mm)
4 lane = 2" (50.8mm)
These dimensions are for ground level road systems, the elevated systems are very slightly different, see their category pages for actual dimensions.
These dimensions are for the road surfaces only, the sidewalks add .25" (6.3mm) per side so you can add .5" (12.7mm) to each of those dimensions for a total width.