You do not need a car in New Haven. Yale operates a comprehensive (and free) campus shuttle system [1] making it convenient to travel in and around the campus.
If you plan to drive in the U.S., please read our Driving in the U.S. page [12] for important information.
Links
[1] https://your.yale.edu/work-yale/campus-services/yale-transit/shuttle
[2] https://your.yale.edu/work-yale/campus-services/getting-around-yale/walking-new-haven
[3] https://your.yale.edu/work-yale/campus-services/getting-around-yale/bike
[4] https://your.yale.edu/community/getting-around-yale/shuttle
[5] https://your.yale.edu/work-yale/campus-services/travel/ground-transportation/airport-shuttle/taxi
[6] https://your.yale.edu/work-yale/campus-services/getting-around-yale/rideshare
[7] https://www.lyft.com/
[8] https://www.uber.com/
[9] https://your.yale.edu/work-yale/campus-services/travel/air-travel
[10] http://your.yale.edu/work-yale/campus-services/getting-around-yale/train
[11] https://your.yale.edu/work-yale/campus-services/getting-around-yale/bus
[12] https://oiss.yale.edu/getting-started/new-students/preparing-for-yale/transportation-driving/driving-in-the-us
[13] https://your.yale.edu/administrative-services/travel-relocation-fleet/travel-management
[14] https://your.yale.edu/work-yale/campus-services/getting-around-yale/zipcar