; (2) to include, in the notification provided pursuant to paragraph (1), a written gas discharge plan with respect to the applicable hazardous materials being transported; and (3) to reduce or eliminate blocked crossings resulting from delays in train movements. (c) Additional requirements In developing the regulations required under subsection (a), the Secretary shall include requirements regarding— (1) train length and weight; (2) train consist; (3) route analysis and selection; (4) speed restrictions; (5) track standards; (6) track, bridge, and rail car maintenance; (7) signaling and train control; (8) response plans; and (9) any other requirements that the Secretary determines are necessary. (d) High-Hazard flammable trains The Secretary may modify the safety requirements for trains subject to section 174.310 of title 49, Code of Federal Regulations, to satisfy, in whole or in part, the rulemaking required under subsection (a). 4. Rail car inspections (a) Rulemaking (1) Inspection requirements Not later than 1 year after date of the enactment of this Act, the Secretary shall review and update, as necessary, applicable regulations under chapters I and II of subtitle B of title 49, Code of Federal Regulations— (A) to create minimum time requirements that a qualified mechanical inspector must spend when inspecting a rail car or locomotive