Safe Transportation of Hazardous Materials Act of 2011 - Requires railroad carriers engaged in the transportation of hazardous materials (hazmats) to submit to the Secretary of Transportation, and update annually, a plan for providing at least 48 hours notification to requesting local emergency responders before transporting hazmats through their jurisdictions.
Directs the Secretary to require carriers to demonstrate periodically that the plan's procedures are adequate to give appropriate notice to such responders.