Answer by  
                                                                                          Atomicrayon (2504)
                                                            
                          
                          
                                                          Yes, it is very safe for a teenager to ride a Greyhound bus alone.  I've been using this method of transportation since I was only eight years old, and I find them to be quite comfortable and safe.  I've never had problems with them, and in fact, my 10 year old son will be using them soon as well.