diff --git a/core/lib/Drupal/Core/Controller/ControllerBase.php b/core/lib/Drupal/Core/Controller/ControllerBase.php
index 5763a7dc14..f8258e746d 100644
--- a/core/lib/Drupal/Core/Controller/ControllerBase.php
+++ b/core/lib/Drupal/Core/Controller/ControllerBase.php
@@ -8,8 +8,10 @@
 use Drupal\Core\Routing\RedirectDestinationTrait;
 use Drupal\Core\Routing\UrlGeneratorTrait;
 use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\Core\Url;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Drupal\Core\Messenger\MessengerTrait;
+use Symfony\Component\HttpFoundation\RedirectResponse;
 
 /**
  * Utility base class for thin controllers.
@@ -282,6 +284,27 @@ protected function languageManager() {
     return $this->languageManager;
   }
 
+  /**
+   * Returns a redirect response object for the specified route.
+   *
+   * @param string $route_name
+   *   The name of the route to which to redirect.
+   * @param array $route_parameters
+   *   (optional) Parameters for the route.
+   * @param array $options
+   *   (optional) An associative array of additional options.
+   * @param int $status
+   *   (optional) The HTTP redirect status code for the redirect. The default is
+   *   302 Found.
+   *
+   * @return \Symfony\Component\HttpFoundation\RedirectResponse
+   *   A redirect response object that may be returned by the controller.
+   */
+  protected function redirect($route_name, array $route_parameters = [], array $options = [], $status = 302) {
+    $options['absolute'] = TRUE;
+    return new RedirectResponse(Url::fromRoute($route_name, $route_parameters, $options), $status);
+  }
+
   /**
    * Returns the service container.
    *
diff --git a/core/lib/Drupal/Core/Entity/Controller/EntityController.php b/core/lib/Drupal/Core/Entity/Controller/EntityController.php
index 46cc730b9e..bd99b0a7cd 100644
--- a/core/lib/Drupal/Core/Entity/Controller/EntityController.php
+++ b/core/lib/Drupal/Core/Entity/Controller/EntityController.php
@@ -16,7 +16,9 @@
 use Drupal\Core\DependencyInjection\ContainerInjectionInterface;
 use Drupal\Core\StringTranslation\StringTranslationTrait;
 use Drupal\Core\StringTranslation\TranslationInterface;
+use Drupal\Core\Url;
 use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\RedirectResponse;
 
 /**
  * Provides the add-page and title callbacks for entities.
@@ -101,6 +103,27 @@ public static function create(ContainerInterface $container) {
     );
   }
 
+  /**
+   * Returns a redirect response object for the specified route.
+   *
+   * @param string $route_name
+   *   The name of the route to which to redirect.
+   * @param array $route_parameters
+   *   (optional) Parameters for the route.
+   * @param array $options
+   *   (optional) An associative array of additional options.
+   * @param int $status
+   *   (optional) The HTTP redirect status code for the redirect. The default is
+   *   302 Found.
+   *
+   * @return \Symfony\Component\HttpFoundation\RedirectResponse
+   *   A redirect response object that may be returned by the controller.
+   */
+  protected function redirect($route_name, array $route_parameters = [], array $options = [], $status = 302) {
+    $options['absolute'] = TRUE;
+    return new RedirectResponse(Url::fromRoute($route_name, $route_parameters, $options), $status);
+  }
+
   /**
    * Displays add links for the available bundles.
    *
diff --git a/core/lib/Drupal/Core/Form/FormBase.php b/core/lib/Drupal/Core/Form/FormBase.php
index 165cb3a8f0..e4b7f4a98c 100644
--- a/core/lib/Drupal/Core/Form/FormBase.php
+++ b/core/lib/Drupal/Core/Form/FormBase.php
@@ -10,7 +10,9 @@
 use Drupal\Core\Routing\RedirectDestinationTrait;
 use Drupal\Core\Routing\UrlGeneratorTrait;
 use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\Core\Url;
 use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\RedirectResponse;
 use Symfony\Component\HttpFoundation\RequestStack;
 use Drupal\Core\Messenger\MessengerTrait;
 
@@ -194,6 +196,27 @@ protected function currentUser() {
     return \Drupal::currentUser();
   }
 
+  /**
+   * Returns a redirect response object for the specified route.
+   *
+   * @param string $route_name
+   *   The name of the route to which to redirect.
+   * @param array $route_parameters
+   *   (optional) Parameters for the route.
+   * @param array $options
+   *   (optional) An associative array of additional options.
+   * @param int $status
+   *   (optional) The HTTP redirect status code for the redirect. The default is
+   *   302 Found.
+   *
+   * @return \Symfony\Component\HttpFoundation\RedirectResponse
+   *   A redirect response object that may be returned by the controller.
+   */
+  protected function redirect($route_name, array $route_parameters = [], array $options = [], $status = 302) {
+    $options['absolute'] = TRUE;
+    return new RedirectResponse(Url::fromRoute($route_name, $route_parameters, $options), $status);
+  }
+
   /**
    * Returns the service container.
    *
diff --git a/core/lib/Drupal/Core/Routing/UrlGeneratorTrait.php b/core/lib/Drupal/Core/Routing/UrlGeneratorTrait.php
index 2c510fff49..209030729b 100644
--- a/core/lib/Drupal/Core/Routing/UrlGeneratorTrait.php
+++ b/core/lib/Drupal/Core/Routing/UrlGeneratorTrait.php
@@ -58,8 +58,12 @@ protected function url($route_name, $route_parameters = [], $options = []) {
    *
    * @return \Symfony\Component\HttpFoundation\RedirectResponse
    *   A redirect response object that may be returned by the controller.
+   *
+   * @deprecated in drupal:8.0.0 and is removed from drupal:9.0.0.
+   *   Use new RedirectResponse(Url::fromRoute()) instead.
    */
   protected function redirect($route_name, array $route_parameters = [], array $options = [], $status = 302) {
+    @trigger_error(__NAMESPACE__ . "\UrlGeneratorTrait::redirect() is deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. Use new RedirectResponse(Url::fromRoute()) instead. See https://www.drupal.org/node/2614344", E_USER_DEPRECATED);
     $options['absolute'] = TRUE;
     $url = $this->getUrlGenerator()->generateFromRoute($route_name, $route_parameters, $options);
     return new RedirectResponse($url, $status);
@@ -70,8 +74,12 @@ protected function redirect($route_name, array $route_parameters = [], array $op
    *
    * @return \Drupal\Core\Routing\UrlGeneratorInterface
    *   The URL generator service.
+   *
+   * @deprecated in drupal:8.0.0 and is removed from drupal:9.0.0.
+   *   Use the url_generator service instead.
    */
   protected function getUrlGenerator() {
+    @trigger_error(__NAMESPACE__ . "\UrlGeneratorTrait::getUrlGenerator() is deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. Use the url_generator service instead. See https://www.drupal.org/node/2614344", E_USER_DEPRECATED);
     if (!$this->urlGenerator) {
       $this->urlGenerator = \Drupal::service('url_generator');
     }
@@ -85,8 +93,11 @@ protected function getUrlGenerator() {
    *   The url generator service.
    *
    * @return $this
+   *
+   * @deprecated in drupal:8.0.0 and is removed from drupal:9.0.0.
    */
   public function setUrlGenerator(UrlGeneratorInterface $generator) {
+    @trigger_error(__NAMESPACE__ . "\UrlGeneratorTrait::setUrlGenerator() is deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. See https://www.drupal.org/node/2614344", E_USER_DEPRECATED);
     $this->urlGenerator = $generator;
 
     return $this;
diff --git a/core/tests/Drupal/Tests/Core/Routing/UrlGeneratorTraitTest.php b/core/tests/Drupal/Tests/Core/Routing/UrlGeneratorTraitTest.php
index 06c470ba33..230f059581 100644
--- a/core/tests/Drupal/Tests/Core/Routing/UrlGeneratorTraitTest.php
+++ b/core/tests/Drupal/Tests/Core/Routing/UrlGeneratorTraitTest.php
@@ -7,12 +7,16 @@
 /**
  * @coversDefaultClass \Drupal\Core\Routing\UrlGeneratorTrait
  * @group Routing
+ * @group legacy
  */
 class UrlGeneratorTraitTest extends UnitTestCase {
 
   /**
    * @covers ::setUrlGenerator
    * @covers ::getUrlGenerator
+   *
+   * @expectedDeprecation Drupal\Core\Routing\UrlGeneratorTrait::setUrlGenerator() is deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. See https://www.drupal.org/node/2614344
+   * @expectedDeprecation Drupal\Core\Routing\UrlGeneratorTrait::getUrlGenerator() is deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. Use the url_generator service instead. See https://www.drupal.org/node/2614344
    */
   public function testGetUrlGenerator() {
     $url_generator = $this->createMock('Drupal\Core\Routing\UrlGeneratorInterface');
@@ -28,6 +32,8 @@ public function testGetUrlGenerator() {
 
   /**
    * @covers ::redirect
+   *
+   * @expectedDeprecation Drupal\Core\Routing\UrlGeneratorTrait::redirect() is deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. Use new RedirectResponse(Url::fromRoute()) instead. See https://www.drupal.org/node/2614344
    */
   public function testRedirect() {
     $route_name = 'some_route_name';
@@ -50,4 +56,29 @@ public function testRedirect() {
     $this->assertSame($generated_url, $result->getTargetUrl());
   }
 
+  /**
+   * @covers ::url
+   *
+   * @expectedDeprecation Drupal\Core\Routing\UrlGeneratorTrait::url() is deprecated in drupal:8.0.0 and is removed from drupal:9.0.0. Use \Drupal\Core\Url::fromUri() instead. See https://www.drupal.org/node/2614344
+   */
+  public function testUrl() {
+    $route_name = 'some_route_name';
+    $generated_url = 'some/generated/url';
+
+    $url_generator = $this->createMock('Drupal\Core\Routing\UrlGeneratorInterface');
+    $url_generator->expects($this->once())
+      ->method('generateFromRoute')
+      ->with($route_name, [], [])
+      ->willReturn($generated_url);
+
+    $url_generator_trait_object = $this->getMockForTrait('Drupal\Core\Routing\UrlGeneratorTrait');
+    $url_generator_trait_object->setUrlGenerator($url_generator);
+
+    $url_generator_method = new \ReflectionMethod($url_generator_trait_object, 'url');
+    $url_generator_method->setAccessible(TRUE);
+
+    $result = $url_generator_method->invoke($url_generator_trait_object, $route_name);
+    $this->assertSame($generated_url, $result);
+  }
+
 }