Hi,

This can be solved pretty easily by using Middleware (http://laravel.com/docs/5.0/middleware)

First lets create the middleware, you can call it whatever, let's say AdminMiddleware:

php artisan make:middleware AdminMiddleware

Now that we have our middleware, we need to edit it and specify what we want it to do.

In App\Http\Middleware you should see the newly created file

<?php namespace App\Http\Middleware;

use Closure;

class AdminMiddleware {

	/**
	 * Handle an incoming request.
	 *
	 * @param  \Illuminate\Http\Request  $request
	 * @param  \Closure  $next
	 * @return mixed
	 */
	public function handle($request, Closure $next)
	{
		if ($request->user()->type != 'A')
		{
			return redirect('home');
		}

		return $next($request);
	}

}

What we are doing here, is taking the user and checking to see if the type is A if not.. redirect home.

Now that we have that, we need to use it in the routes.php file.

Route::group(['middleware' => 'App\Http\Middleware\AdminMiddleware'], function()
{
    Route::get('/admin', function()
    {
        // can only access this if type == A
    });

});

Hopefully that helps!