I just discovered your channel, and it’s exactly what I need for my Unreal Engine 5 survival game project, especially for realistic buoyancy and understanding how ocean physics behave. Your channel is a goldmine for my project! If you could record and upload your videos in 4K, that would be perfect. Unfortunately, close-up videos on these topics are rare on RU-vid, particularly without commentary, and I live far from the ocean. Thank you so much!
That would be Highway Gothic (also known as the FHWA series fonts or the Standard Alphabets for Highway Signs.) It is a series of sans-serif typefaces used for text on road signs.