i think - but am not sure - they use clothoid definitions to characterize jerk, as it is more restrictive regarding the maximum rate of turn change. you can mak

i think - but am not sure - they use clothoid definitions to characterize jerk, as it is more restrictive regarding the maximum rate of turn change. you can make quite a sharp turn with a mathematical spline. but i can see how they would use the physical spline to solve this… Googling “railroad spline clothoid” got some intriguing hits — and this HN comment. https://news.ycombinator.com/item?id=10446154 https://news.ycombinator.com/item?id=10446154 semi-relatedly, this is a fun watch. https://youtu.be/aVwxzDHniEw https://youtu.be/aVwxzDHniEw even less relatedly, here is a drawing i did by torturing a clothoid optimizer https://www.instagram.com/p/CSe40DTp-WW/?igshid=YmMyMTA2M2Y= https://www.instagram.com/p/CSe40DTp-WW/?igshid=YmMyMTA2M2Y=