After Jarlstrom mailed his traffic lights ideas to the board, it declared the emails illegal because in them he called himself an engineer."

While Will is technically correct, he leaves out some pertinent details. On September 3, 2014, Jarlstrom emailed the board about the lights which responded by warning him that he was violating Oregon law and sent him the pertinent statutes which he agreed to comply with. A few months later Jarlstrom presented himself as an engineer after being warned about doing so. Then "on March 26, 2015, the Board opened a law enforcement case against Jarlstrom for the unlicensed practice of engineering"

http://ij.org/wp-content/uploads/2017/04/OR-Math-Jarlstrom-Final-Default-Order-IJ084769xA6322.pdf