In some cases, you might see motorcycles as vehicles in your dream; it suggests that you have an adventurous streak in yourself, which drives you to become more independent and crave freedom.
You have aspirations that will make you chase these independent thoughts and emotions. Motorcycles are symbolic of a carefree instinct that you wish to nurture in your life.
You want to act more freely and bring back the excitement of the olden days in life. This can also be an important way for you to let things go and live in the moment.