Annual average daily traffic is a measure used primarily in transportation planning and transportation engineering.  New York city has a great website to look at traffic volume.  The interface is a bit funky, but once you get the hang of it, there’s a lot of information here.

Carbon allowances are percentages of existing emissions that are allowed under various proposed legislation.  In the Kerry Waxman bill, major utilities were given substantial allowances for several years, until a fairly steep curve to a 0 allowance policy in 2035.

House of Representative bill 2454.  Also known as Waxman-Markey, after the bill sponsors.  This bill was created in the 111th Congress, in 2009-2010. The goal is to  create clean energy jobs, achieve energy independence, reduce global warming pollution and transition to a clean energy economy.

H.R. 1: American Recovery and Reinvestment Act of 2009.  This bill was created in the 111th Congress, in 2009-2010. Also known as “The stimulus”.
Making supplemental appropriations for job preservation and creation, infrastructure investment, energy efficiency and science, assistance to the unemployed, and State and local fiscal stabilization, for fiscal year ending September 30, 2009, and for other purposes.

Carbon auctions are a mechanism by which a regulating agency auctions off allowances.  These allowances are sold to large energy emitters, who must then purchase offsets or reduce emissions in excess of the amount purchased at auction.