More than 200 of the companies and associations that keep America thriving are CTP members.Interested in becoming a CTP member? Join with current CTP member organizations by filling out the form and clicking SUBMIT below. Your support will help us drive the nation’s economy in a way that promotes highway safety and protects the environment. Please note that while no donation is required to join CTP, we hope that you’ll also consider contributing financially to our cause. Click here to donate.