On the putting green, the golfer who putts last has the advantage of watching his predecessor ‘show him the line’. There is valuable information to be gleaned if his attention is focused on the details.  For instance, he can determine many uncontrollable factors like the speed, slope, and characteristics of the green that influence the ball. He must have knowledge of these details in order to determine the ball’s path and the power of his stroke once he is over the ball. 

On June 19, 2015 the Secretary of the Department of Transportation, Anthony R. Foxx, and the Administrator of the Environmental Protection Agency, Gina McCarthy, signed the 629 page proposed Greenhouse Gas Emissions and Fuel Efficiency Standards (Phase 2 of the Medium- and Heavy-Duty Engines and Vehicles Truck initiative) for publication in the Federal Register.  It establishes a comprehensive technology advancing program to reduce greenhouse gas (GHG) emissions and fuel consumption for new on-road heavy-duty vehicles that will strengthen Phase 1 mandates and extend emissions reduction standards through model year 2027.  

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