Second part of the task

.gitmodules

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+[submodule "assets/js/EventEmitter"]
+	path = assets/js/EventEmitter
+	url = git://github.com/Wolfy87/EventEmitter.git
+[submodule "assets/js/Heir"]
+	path = assets/js/Heir
+	url = git://github.com/Wolfy87/Heir.git

Second_server/Traffic_lights.js

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+function Traffic_lights(config_file)
+{
+    this.state = null
+    this.switchTime = null;
+
+    this.tram_mode = false;
+    this.wait_for_tram = 3000;
+    this.green_for_tram = 15000;
+    this.percent_of_curr_color = 0.9;
+
+    this._timeout = null
+    this._config = config_file || null;
+    if (this._config)
+        this._config = JSON.parse(this._config)
+
+    Traffic_lights.prototype.toYellow = function () {
+        if (this._timeout) {
+            clearTimeout(this._timeout)
+        }
+        this.switchTime = new Date();
+        this.state = 'yellow'
+        this._timeout = setTimeout(function () {
+            this.toRed();
+        }.bind(this), this._config[this.state])
+    }
+
+    Traffic_lights.prototype.toGreen = function () {
+        if (this._timeout) {
+            clearTimeout(this._timeout)
+        }
+        this.switchTime = new Date();
+        this.state = 'green'
+        this._timeout = setTimeout(function () {
+            this.toYellow();
+        }.bind(this), this._config[this.state])
+    }
+
+    Traffic_lights.prototype.toRed = function () {
+        if (this._timeout) {
+            clearTimeout(this._timeout)
+        }
+        this.switchTime = new Date();
+        this.state = 'red'
+        this._timeout = setTimeout(function () {
+            this.toGreen();
+        }.bind(this), this._config[this.state])
+    }
+
+    Traffic_lights.prototype.getState = function() { // current state
+        if (this.tram_mode)
+            return 'green'
+        else
+            return this.state
+    };
+
+    Traffic_lights.prototype.stopIt = function() { // Stop switching lights
+        if (this._timeout) {
+            clearTimeout(this._timeout)
+        }
+    }
+
+    Traffic_lights.prototype.passTram = function() {
+        console.log("Трамвай на подходе");
+        setTimeout(function() {
+            this.tram_mode = true;
+            console.log("Трамвай пошел");
+            setTimeout(function() {
+                this.tram_mode = false; // Трамвай как-будто не проезжал, таймер все это время шел, как обычно.
+                // Можно, конечно, было понимать, что надо вернуться в старое состояние до трамвая
+                // Проверим, так ли много осталось от текущего цвета, стоит ли в него переходить
+                if (this.switchTime - new Date() > this.percent_of_curr_color * this._config[this.state])
+                    switch(this.state) {
+                        case 'green':
+                            this.toYellow();
+                            break;
+                        case 'yellow':
+                            this.toRed();
+                            break;
+                        case 'red':
+                            this.toGreen();
+                            break;
+                    }
+            }.bind(this), this.green_for_tram)
+        }.bind(this), this.wait_for_tram)
+    }
+
+    // Traffic_lights.prototype.tramPassed = function() {
+
+    // }
+
+    Traffic_lights.prototype.onEventEmmiter = function(event_emmiter) {
+        event_emmiter.addListener('Tram is comming', function() {this.passTram();}.bind(this))
+    }
+
+}
+// Экспортируем
+module.exports = Traffic_lights;
+//exports.Traffic_lights = Traffic_lights;

Second_server/package.json

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+{
+  "name": "TrafficLightsServer",
+  "description": "Second task CRI",
+  "version": "0.0.1",
+  "private": true,
+  "dependencies": {
+    "express": "4.x"
+  }
+}

Second_server/server.js

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+var trafficlight = require('./Traffic_lights');
+var events = require('events');
+var express = require('express');
+
+var app = express();
+var emitter = new events.EventEmitter();
+
+var param = '{"green":4000,"yellow":1000,"red":6000}';
+var my_trafficlight = new trafficlight(param);
+my_trafficlight.toGreen(); // Start TrafficLights
+my_trafficlight.onEventEmmiter(emitter);
+
+setInterval(function() {
+				emitter.emit("Tram is comming");
+				}, 20000);
+
+app.get('/', function(req, res){
+	res.send('The state of tram is: ' + my_trafficlight.getState());
+});
+
+var server = app.listen(3000, function() {
+    console.log('Listening on port %d', server.address().port);
+});