.roads_features[highway_type=path][highway_sub_type=t1][zoom>=13][zoom<15] {
  line-dasharray: 1,2;
  line-color: #707070;
}
.roads_features[highway_type=path][highway_sub_type=t1][zoom>=15][zoom<17] {
  line-dasharray: 1,3;
  line-color: #707070;
}
.roads_features[highway_type=path][highway_sub_type=t1][zoom>=17] {
  line-dasharray: 1,4;
  line-color: #707070;
}

