An amendment made to the vehicle code about Railroad Crossings is at http://www.ilga.gov/legislation/publicacts/pubact92/acts/92-0098.html\n\nSpecifically, it's about "an  automated\nrailroad  grade  crossing  enforcement  system  is  a  system\noperated  by a law enforcement agency that records a driver's\nresponse  to  automatic,  electrical  or  mechanical   signal\ndevices  and crossing gates"