Transport infrastructure - Topics

How long should a tunnel last and who pays for the answer? Maintenance crews get four hours a night on a busy main line — what happens when a job overruns? Guardrail choice: what decides whether a barrier bends or stops the car Tunnel cost: why ventilation and not width decides the bill The vibration and construction damage a new metro tunnel does to buildings above it What changes when a road agency stops building and starts maintaining How does a motorway pay for itself when the trucks that damage it pay the least? Light spilling from roads and car parks and what it does to insects Can you charge an EV from a normal wall socket overnight? A single barge tow on the Mississippi carries as much as a thousand lorries Who pays for the road out to a hamlet of twelve people? Turnback tracks at terminal stations are the bottleneck nobody plans for Why expressway runoff kills stream life even when every car on it is clean Do noise barriers actually reduce what a nearby house hears Investing in capacity or investing in condition: how agencies choose Can a road be too wide for its own speed limit to make sense? BOT contracts: what happens when the traffic forecast was too optimistic Why is rail signalling so expensive to modernise? Ramp gradients in the design code and ramp gradients in the real car park How is a bridge's remaining life estimated without taking it apart? Why does a ferry crossing still take an hour where a bridge would take two minutes? What level boarding actually means for a wheelchair user changing trains Why is there nowhere to park a lorry at night on most of the motorway network? What a road safety audit catches that a design check never will Winter road maintenance: the cost of salt versus the cost of closure What a transport asset register actually needs to be useful Why does a motorway surface last twenty years while a farm track needs grading every spring? Is a denser network always more resilient or just more expensive? Who pays to keep a historic canal navigable when almost nothing commercial runs on it? What has to be standardised before two modes can share a platform Interfaces are where transport projects quietly blow their budget How redundancy gets priced into a transport business case