rails.config

{
  "rustyrail" : {
    "friction" : 4.0,
    "speedLimit" : 30,
    "acceleration" : -30
  },
  "compositerail" : {
    "friction" : 1.0,
    "speedLimit" : 100,
    "acceleration" : -100
  },
    "friction" : 1.0,
    "speedLimit" : 100,
    "acceleration" : -100
  },
  "metamaterial:railstop" : {
    "friction" : 1.0,
    "speedLimit" : 100,
    "acceleration" : -100
  },
  "metamaterial:railreverse" : {
    "friction" : 10.0,
    "speedLimit" : 100,
    "acceleration" : -100
  }
}