Landbridge

Overview

An intermodal freight and rail-logistics theme built around the one question every shipper actually asks: can you move this, by what route, and how long will it take. Three things in it are real rather than decorative. A multimodal routing engine searches the terminal network for the fastest path rather than the shortest — genuinely different answers, since on a quarter of the demo network the quicker route is the longer one, a longer single-mode run beating a shorter one that needs another crane lift; it is a Dijkstra over (terminal, arriving-mode) states, written twice, in PHP and in the browser, and cross-checked against itself on all 132 ordered pairs. An ISO container load planner uses the published ISO 668 dimensions and payload limits with a real three-dimensional maximal-space packing heuristic, drawn in WebGL2 with its own perspective camera and depth buffer, and reports the number a forwarder wants: whether the freight cubes out or weighs out. And behind every page a GPU cellular automaton runs the Nagel-Schreckenberg traffic model, producing the stop-and-go jam waves that appear on a busy corridor with nothing in front of them; the site samples that live simulation and plots its measured flow against density, which lands on the model characteristic fundamental diagram. All of it is checkable in public at /network/?verify=1. The layout archetype is operating paperwork rather than marketing — numbered consignment rules, tabular monospaced figures, hairline data tables and a live departure board, with no full-bleed photograph behind the first screen, because the first thing a shipper wants is a number. Self-hosted Barlow and DM Mono, zero JavaScript dependencies, and a one-click idempotent demo importer.