Inspector General documented that Metro's System Safety and Risk Management Office was bypassed when changes were made to Metrorail's operating procedures, even though that office's review and approval was required as a matter of policy. On June 22, 2009, two Metrorail trains collided between the Takoma and Fort Totten Metro stations, killing nine. In February 2011, the National Transportation Safety Board conducted a public hearing during which witnesses testified about problems with the safety culture at WMATA. The NTSB's final report on the accident commented that "[t]he failure of WMATA engineers and technicians or managers to properly address track circuit anomalies is symptomatic of the larger safety culture issues within the organization." Safety concerns have grown to the point that the region's Congressional delegation introduced the "National Metro Safety Act of 2011," which would establish federal safety standards for heavy rail mass transit systems. In response, WMATA is replacing its track control system and ordered an immediate inspection of all of its escalators. That inspection showed that over 10 percent of the escalators had faulty brakes. The service state of elevators and escalators is of public concern. WMATA posts a webpage that is updated daily to notify users of elevator and escalator outages. WMATA makes track announcements that contradict industry safety standards, encouraging passengers to "stay clear of moving parts", encouraging people to stand on one side, and slowing the operating speed, which has the effect of encouraging walking on the escalators. Closed-circuit television cameras monitor every Metrobus and every Metrorail station. Discrimination In 1990, Christine Townsend sued WMATA in the Washington federal district court on the basis of sexual discrimination. She won, with the court noting in the outcome of Townsend v. Washington Metro. Area Transit Auth. that the WMATA explanation had "many unexplained inconsistencies, irregularities, and holes". Former Metro workers claim that WMATA consistently passes over non-black applicants or workers for employment or promotion. In May 2015, the WMATA board voted to ban advocacy advertising after the American Freedom Defense Initiative sought to purchase advertisements in five subway stations and on twenty buses depicting Muhammad. Future expansion WMATA and its local jurisdictions developed a six-year, $5 billion "Capital Improvement Program" (CAP) which took effect on July 1, 2010, and expired on June 30, 2016. Under CAP, the local jurisdictions will fund capital projects (through the sale of municipal bonds) with matching funds provided by the federal government. CAP