Appendix A: List of Acronyms

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

AADT average annual daily traffic

ADA Americans with Disabilities Act

AFV alternative fuel vehicle

BAC blood alcohol...

Figure 98 - U.S. International Trade in Transportation-Related Services: 1990-2002

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NOTES: Transportation services include passenger fares, and freight and port services. It excludes receipts and payments for travel services...

Figure 16 - Amtrak On-Time Performance: 1993-2002

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NOTES: Short distance is less than 400 miles; long distance is > 400 miles. As of 2001, Amtrak no longer reports short- and long-haul data separately.

Lock Repairs on the Great Lakes Saint Lawrence Seaway System

Great Lakes Saint Lawrence Seaway System (the Seaway) locks are usually closed during the winter for several months due to ice. Excluding the winter closure, the 2001 season consisted of 277 days. The lock system of the portion of...

Greenhouse Gas Emissions

U.S. greenhouse gas (GHG) emissions totaled 6,936 teragrams (trillion grams) of carbon dioxide equivalent (TgCO2Eq) in 2001,1 of which 1,867 TgCO2Eq (27 percent) were emitted by transportation. Transportation emissions have grown 22 percent since 1990, while total U....

Commuting Expenses of the Working Poor

The U.S. working poor1 totaled more than 9 million (6 percent of all workers) in 1999 [1]. Half of these workers spent almost 10 percent of their income on commuting expenses in that year2 (figure 39). This is over twice the percentage of income that...

Figure 2 - Labor Productivity of For-Hire Transportation Industries: 1990-2000

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NOTES: Labor productivity for transportation measures quality-adjusted ton- and passenger-miles per hour. Quality adjustment corrects for differences in...

Merchant Marine Vessel Capacity

Merchandise trade valued at over $718 billion moved by maritime vessels between U.S. and foreign seaports in 2001 [2]. Container shipments increased 71 percent between 1992 and 20011 [3].

The average capacity of containerships calling at U.S. ports...

Age of Highway and Transit Fleet Vehicles

Because of improvements in the longevity of passenger cars, the median age of the automobile fleet in the United States has increased significantly, from 7.0 years in 1992 to 8.4 years in 2002. The median age of the truck fleet,1 by contrast, began...

Commuting Expenses of the Working Poor - Box

The data presented here are based on an analysis by the Bureau of Transportation Statistics (BTS) of the U.S. Census Bureau’s Survey of Income and Program Participation (SIPP) (availableat http://www.sipp. census.gov/...