The mayor of one of the towns through which the rerouted trains travel warned earlier this month that the high-speed trains were dangerously close to cars and pedestrians.

"Come back when there is that accident, and try to justify not putting in those safety enhancements, or you can go back now and advocate for the money to do it, because this project was never needed and endangers our citizens," Lakewood Mayor Don Anderson told transportation officials in early December, according to Seattle's KOMO News.

"Our community has been very concerned about the safety of this modification of the rail route for several years and were unsuccessful in either stopping it or having some modifications," Mr Anderson told MSNBC.