Traffic Architect
The city is the easy part. Making it move isn't. Lay out roads, shape junctions and time the lights, then watch thousands of simulated cars find every flaw you missed. Take cars off the road with buses, trains and metro — or build the whole city yourself in Creative mode.
The city is the easy part. Making it move isn't.
Traffic Architect is a relaxing but deep traffic-management sim. Buildings go up, demand grows, and the network underneath has to carry it: lay out roads, shape junctions, time the lights — then watch thousands of individually simulated cars find every flaw you missed. Spot the jam, find the cause, rebuild the bottleneck — and watch the city flow again. Then demand grows, and it starts all over.
Or take the whole thing into your own hands. In Creative mode you place the buildings too — design the city and the network together, exactly the way you want them.
Design the network
Upgrade roads through 10 tiers — from gravel tracks to boulevards and multi-lane highways
Cross rivers and mountains with bridges and tunnels, then cross your own roads with multi-level interchanges
Shape the flow with one-way streets, turn restrictions and per-junction rules
Tune traffic lights with full signal-timing control, phase by phase
Realistic traffic, simulated car by car
Every vehicle is simulated: follow a single car across town and see the jam from inside it
A congestion heat-map shows exactly where the network hurts — info overlays tell you why
Over two dozen live metrics: congestion, queued cars, average trip time, cars per road km, transit share, car trips saved
Every metric charted across the whole run, so you can see the exact moment a new interchange fixed things — or broke them
Move beyond the car
Bus lines with routes and stops that take cars off the road
Passenger rail and underground metro with stations, level crossings and tunnels
Passengers route across your entire network — bus, rail, metro, transfers included. Build connections, and people will use them.
Freight runs point-to-point — dedicate a line, connect industry to demand, and the trucks come off your roads.
Build it your way
Creative mode: place buildings yourself, no budget and no way to lose — a sandbox for the city you've been picturing
Full map editor: sculpt terrain, rivers, mountains and lakes, then play real runs on your own maps
Share your maps on Steam Workshop — and play everyone else's
Large maps up to 18×18 km, with dense downtown districts
Scenarios, quests and stage progression when you want the pressure back
Multiple cities, photo mode, Steam achievements and cloud saves
The city will keep growing either way. Whether it keeps moving is up to you.
