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Transport · Sector explainer
Explainer
Ice on a bridge deck, crosswind on a short runway, swell at the harbour mouth, a dead zone on a mountain highway. Each chapter puts one transport deployment on the stage, lets you change the input that decides the operation, and computes the answer.
01 · Road weather
Psychrometry
A road weather station beside a bridge: air temperature and humidity on the mast, a pavement sensor flush in the lane. Frost forms on a surface colder than both freezing and the dew point of the air above it, which is why a bridge deck ices before the road. Set the air and the deck to see the call the maintenance crew gets. Dew point from the Magnus formula with the Alduchov–Eskridge constants (17.625, 243.04 °C).
02 · Corridor spacing
Geometry
A transportation department places stations along a corridor so that no stretch of road is far from a reading. With stations every s kilometres, the farthest any point of road sits from the nearest station is s/2. Set the corridor length and the spacing to count the stations and the worst-case gap.
03 · Small-airport weather
Vectors
An automated weather station at a small airport reports wind to pilots and to the approach. What matters on landing is the wind across the runway, V·sin θ, and along it, V·cos θ, where θ is the angle between the wind and the runway heading. Turn the wind and pick the runway to see which end to use and the crosswind it brings.
Runway
04 · Port met-ocean
Radio horizon
A wave buoy at the harbour mouth reports height and period; a receiver ashore hears the position broadcasts that ships send on VHF. Both stop at the radio horizon, about 4.12(√h₁ + √h₂) kilometres for antenna heights in metres under standard refraction. Raise the shore antenna and pick the ship’s to see the range grow.
Ship antenna height
05 · Highway coverage
Geometry
Small cells along an unserved highway, each backhauled by a satellite terminal where there is no fibre. Sites go one cell diameter apart, less the overlap a handover needs: n = L / (2r(1 − o)). Set the road length, the cell radius the terrain allows and the overlap.
06 · Proof
Service level
What a transport authority asks to see, from the sector research. Maintenance service levels turn into arithmetic: an availability target allows a number of hours down per year, and the time to repair decides how many failures fit inside them.
Road weather networks, airport stations, port met-ocean and corridor coverage, designed to the transport authority’s specification and kept running to its service levels.
Talk to usSector overviewPlan a deployment