diff --git a/modules/router-store/spec/integration.spec.ts b/modules/router-store/spec/integration.spec.ts
index 28323ca376..a1c725fb40 100644
--- a/modules/router-store/spec/integration.spec.ts
+++ b/modules/router-store/spec/integration.spec.ts
@@ -3,14 +3,14 @@ import {TestBed} from '@angular/core/testing';
 import {NavigationEnd, Router} from '@angular/router';
 import {RouterTestingModule} from '@angular/router/testing';
 import {Store, StoreModule} from '@ngrx/store';
-import {ROUTER_CANCEL, ROUTER_ERROR, ROUTER_NAVIGATION, routerReducer, StoreRouterConnectingModule} from '../src/index';
+import { ROUTER_CANCEL, ROUTER_ERROR, ROUTER_NAVIGATION, routerReducer, StoreRouterConnectingModule, RouterNavigationAction, RouterCancelAction, RouterAction } from '../src/index';
 import 'rxjs/add/operator/filter';
 import 'rxjs/add/operator/first';
 import 'rxjs/add/operator/toPromise';
 
 describe('integration spec', () => {
   it('should work', (done) => {
-    const reducer = (state: string = '', action: any) => {
+    const reducer = (state: string = '', action: RouterAction<any>) => {
       if (action.type === ROUTER_NAVIGATION) {
         return action.payload.routerState.url.toString();
       } else {
@@ -49,7 +49,7 @@ describe('integration spec', () => {
   });
 
   it('should support preventing navigation', (done) => {
-    const reducer = (state: string = '', action: any) => {
+    const reducer = (state: string = '', action: RouterAction<any>) => {
       if (action.type === ROUTER_NAVIGATION && action.payload.routerState.url.toString() === '/next') {
         throw new Error('You shall not pass!');
       } else {
@@ -80,7 +80,7 @@ describe('integration spec', () => {
   });
 
   it('should support rolling back if navigation gets canceled', (done) => {
-    const reducer = (state: string = '', action: any): any => {
+    const reducer = (state: string = '', action: RouterAction<any>): any => {
       if (action.type === ROUTER_NAVIGATION) {
         return { url: action.payload.routerState.url.toString(), lastAction: ROUTER_NAVIGATION };
 
@@ -117,7 +117,7 @@ describe('integration spec', () => {
   });
 
   it('should support rolling back if navigation errors', (done) => {
-    const reducer = (state: string = '', action: any): any => {
+    const reducer = (state: string = '', action: RouterAction<any>): any => {
       if (action.type === ROUTER_NAVIGATION) {
         return { url: action.payload.routerState.url.toString(), lastAction: ROUTER_NAVIGATION };
 
@@ -155,7 +155,7 @@ describe('integration spec', () => {
   });
 
   it('should call navigateByUrl when resetting state of the routerReducer', (done) => {
-    const reducer = (state: any, action: any) => {
+    const reducer = (state: any, action: RouterAction<any>) => {
       const r = routerReducer(state, action);
       return r && r.state ? ({ url: r.state.url, navigationId: r.navigationId }) : null;
     };
diff --git a/modules/router-store/src/index.ts b/modules/router-store/src/index.ts
index 0460651859..73fd97f27b 100644
--- a/modules/router-store/src/index.ts
+++ b/modules/router-store/src/index.ts
@@ -2,6 +2,10 @@ export {
   ROUTER_ERROR,
   ROUTER_CANCEL,
   ROUTER_NAVIGATION,
+  RouterNavigationAction,
+  RouterCancelAction,
+  RouterErrorAction,
+  RouterAction,
   routerReducer,
   RouterErrorPayload,
   RouterReducerState,
diff --git a/modules/router-store/src/router_store_module.ts b/modules/router-store/src/router_store_module.ts
index dee5fa8439..b3b977f3e1 100644
--- a/modules/router-store/src/router_store_module.ts
+++ b/modules/router-store/src/router_store_module.ts
@@ -16,6 +16,14 @@ export type RouterNavigationPayload = {
   event: RoutesRecognized
 };
 
+/**
+ * An action dispatched when the router navigates.
+ */
+export type RouterNavigationAction = {
+  type: typeof ROUTER_NAVIGATION,
+  payload: RouterNavigationPayload
+};
+
 /**
  * An action dispatched when the router cancels navigation.
  */
@@ -30,6 +38,14 @@ export type RouterCancelPayload<T> = {
   event: NavigationCancel
 };
 
+/**
+ * An action dispatched when the router cancel navigation.
+ */
+export type RouterCancelAction<T> = {
+  type: typeof ROUTER_CANCEL,
+  payload: RouterCancelPayload<T>
+};
+
 /**
  * An action dispatched when the router errors.
  */
@@ -44,13 +60,29 @@ export type RouterErrorPayload<T> = {
   event: NavigationError
 };
 
+/**
+ * An action dispatched when the router errors.
+ */
+export type RouterErrorAction<T> = {
+  type: typeof ROUTER_ERROR,
+  payload: RouterErrorPayload<T>
+};
+
+/**
+ * An union type of router actions.
+ */
+export type RouterAction<T> = RouterNavigationAction | RouterCancelAction<T> | RouterErrorAction<T>;
+
 export type RouterReducerState = { state: RouterStateSnapshot, navigationId: number };
 
-export function routerReducer(state: RouterReducerState, action: any): RouterReducerState {
-  if (action.type === 'ROUTER_NAVIGATION' || action.type === 'ROUTER_ERROR' || action.type === 'ROUTER_CANCEL') {
-    return ({ state: action.payload.routerState, navigationId: action.payload.event.id });
-  } else {
-    return state;
+export function routerReducer(state: RouterReducerState, action: RouterAction<any>): RouterReducerState {
+  switch (action.type) {
+    case ROUTER_NAVIGATION:
+    case ROUTER_ERROR:
+    case ROUTER_CANCEL:
+      return ({ state: action.payload.routerState, navigationId: action.payload.event.id });
+    default:
+      return state;
   }
 }