Train Horns - Noise Free America: A Coalition to Promote Quiet

Simi Valley Will Soon Become a Quiet Zone –

Del Mar Quiet Zone

Home - Noise Free America: A Coalition to Promote Quiet

Noise Could Take Years Off Your Life. Here Are the Health Impacts

Why is the Caltrain horn so unnecessarily loud? - Quora

Home - Noise Free America: A Coalition to Promote Quiet

Sounding the horn for grade-crossing safety

Excessive noise is an environmental issue - Chicago Sun-Times

City's first railroad quiet zone now in effect - City of Round Rock