for(var car in data.carriages) {
                    var carriage = data.carriages[car];

                    var schemeAvail = checkSchemeAvailable(carriage);
                    var schemeUrl = schemeAvail ? getSchemeUrl(carriage) : getPlaceLine;

                    carriage.open = _.bind(function() {
                        this.schemeUrl = schemeUrl;
                        console.log('carriage.schemeUrl', carriage.schemeUrl)
                    }, carriage);

                    carriage.hide = _.bind(function() {
                        this.schemeUrl = null;
                    }, carriage);
                }