WAVERide (also referred to as FLEX items) is a term coined by Blue Lightning of the NAM Team to refer to items which blur the line between Puzzle Pieces and Override Networks, allowing for the modularity and flexibility of an override with a more complicated setup that is near-impossible or completely impossible through standard dragging and network override techniques.
Technically, the first WAVERide pieces were the Diagonal Street Helper Pieces, introduced by memo in NAM Version 20 from December 2006. These pieces got around the limitations of the existing "zig-zag" draggable override, allowing diagonal streets over shorter stretches, slope tolerance, and most importantly, intersection capability with other networks.
The technology found its way into the RealHighway (RHW) mod in 2010, when Blue Lightning created the FLEXFly (Flexible Flyover) system as part of the Version 4.0 release, which allowed for single-lane flyover ramps, under which RealHighway networks could pass in various configurations. The popularity of FLEXFly has often led to any sort of WAVERide being called a "Flex" setup. The Version 4.2 release of RealHighway will include a new WAVERide setup developed by Tarkus, FlexSPUI, which allows the construction of a flexible, modular Single-Point Urban Interchange (SPUI) in various configurations.
The various starter pieces for override networks are Flex pieces.
Flex modding specs
Technically, a Flex piece is a puzzle piece that places an intersection that is impossible to drag with the normal network tools (see RUL0; the intersection is defined by the CheckTypes).
CheckType = a - rail: 0x04000404 dirtroad: 0x02000200, 0xFFFFFFFF optional
This intersection is defined in RUL1 and assigned a network tile.
Following the above example, in the [RailDirtRoadIntersectionSolutions]:
Finally, this network tile can be the start of an override defined in RUL2.
The above example is how the draggable rail viaducts are started.