Interchange

Interchange is a macro-scale traffic simulator. You can use any OSM file as the infrastructure, Interchange will attempt to auto-detect roads, intersections, etc.

• Interchange is still a work in progress and there are serious bugs and lots of undocumented code.

Quickstart

1. Cleaning

   mvn clean
   

2. Building

   mvn package
   

3. Running

   On OS X / Linux
     ./interchange
   
   On Windows & Other
     java -jar target/interchange-1.0-SNAPSHOT.jar

Features

• Import OSM files to simulate any area of the world

• Vehicles accelerate and decelerate at real-world rates.

• Vehicles/Drivers know and follow speed limits.

• Vehicles/Drivers have a few behaviors they switch between including following other vehicles, crossing intersections, and general.

• Vehicles/Drivers switch between lanes and follow most laws including being in the left-most lane for left turns.

Limitations

• Most 3 and 4 node connections are assumed to have traffic lights.

• One-way streets are not respected.

• Only one vehicle type/spec is supported.

• Only three-way and four-way intersections are supported.

• Drivers strictly follow all implemented laws, there is no chance for vehicles to collide or run red lines. (and it shouldn’t happen).

• Only relatively small OSM files work well. (~5mi x 5mi).

• Interface does not render lanes although they are simulated.

• Edge case: there is a snapping effect where fast-moving vehicles may not move at the appropriate delta per tick