<p>People with intellectual and developmental disabilities (IDD) face significant barriers when it comes to transportation. Yet, transportation plays an important role in quality of life. Understanding the impact of transportation on people’s lives, especially underserved populations like people with IDD, is an under-researched and much needed area; doing so is necessary both to improve transportation and to promote quality of life. The aim of this study was to examine the impact of transportation on the quality of life of people with IDD. We analyzed secondary Personal Outcome Measures data from 2,928 people with IDD (January 1, 2020 and December 31, 2024). We found people with IDD who received transportation had a better quality of life overall and were more likely to have the following outcomes present: safe; free from abuse and neglect; best possible health; rights; treated fairly; respected; use environments; interact with community members; natural support networks; control over personal information; choose personal goals; and realize goals. We need to address transportation barriers to ensure people with IDD can go where they want, both via transportation and in their lives more broadly.</p>