Figure 2-2: District of Columbia Train Accidents

(Excludes highway-grade crossing incidents and other incidents)

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NOTE FOR DATA ON THIS PAGE: "Accidents/incidents" includes all events...

Figure 2-1: District of Columbia Seat Belt Use Rate: 1998-2000

(Percent)

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SOURCE FOR DATA...

Figure 2-1: Shoulder Belt Use

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SOURCE FOR DATA ON THIS PAGE: U.S. Department of Transportation, National Highway Traffic Safety Administration, 1998-2000 State Shoulder Belt Use Survey Results, Research...

Figure 1-2: Highway Bridge Condition:

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Figure 1-2: Highway Bridge Condition

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SOURCE: U.S. Department of Transportation, Federal Highway Administration, National Bridge Inventory: Deficient Bridges...

Figure 1-1: Urban Road Conditions in the District of Columbia: 2000

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(Miles)

Figure 1-1: Urban Road Conditions in the District of Columbia: 2000

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KEY FOR DATA ON THIS PAGE: N = data do not exist.

NOTE: Numbers may not add to 100 due to rounding.

District of Columbia Fast Facts 2000

All public roads: 1,425 milesInterstate: 13 milesRoad bridges: 250Class I railroad trackage: 34 milesInland waterways: 7 milesPublic use airports: 21

Automobiles registered: 200,000Light...

I - Glossary

British thermal unit (Btu): The amount of energy required to raise the temperature of 1 pound of water 1 degree Fahrenheit (F) at or near 39.2 degrees F and 1 atmosphere of pressure.

Certificated airport: An airport holding an operating certificate issued by the...

H - Information on Data Sources

The U.S. Department of Transportations (USDOT) Bureau of Transportation Statistics (BTS) collects and compiles data on the volume of revenue passengers, freight, and mail traffic handled and reported by the nations large...