According to the Bureau of Transportation, there are 211,631 at grade crossings in the US [1]. At $35 million a crossing, that's $7.4 trillion. [1] https://www

According to the Bureau of Transportation, there are 211,631 at grade crossings in the US [1]. At $35 million a crossing, that's $7.4 trillion. [1] https://www.bts.gov/content/highway-rail-grade-crossings-type https://www.bts.gov/content/highway-rail-grade-crossings-typ...