This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
I PA.svg en Interstate highway shield with name of state Modified from Image USDOTFHWAMUTCDSHSMxmmNY svg User Jeff Threedigit Interstate Highway shields with name of state Pennsylvania number
Page 2023 Free-images.com. All images are Public Domain