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Planning Glossary

Glossary Listing

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Keyword Definition
Bus Lane 1) A street or highway lane intended primarily for buses, either all day or during specified periods, but sometimes also used by carpools meeting requirements set out in traffic laws. (APTA1) 2) A lane reserved for bus use only. Sometimes also known as a "diamond lane."
Bikeway 1) Any road, path, or way which in some manner is specifically designated as being open to bicycle travel, regardless of whether such facilities are designated for the exclusive use of bicycles or are to be shared with other transportation modes. (23CFR217) 2) A facility designed to accommodate bicycle travel for recreational or commuting purposes. Bikeways are not necessarily separated facilities; they may be designed and operated to be shared with other travel modes.
Budget Resolution A concurrent resolution passed by Congress presenting the Congressional Budget for each of the succeeding 5 years. A concurrent resolution does not require the signature of the President.
Blood Alcohol Concentration (Highway) A measurement of the percentage of alcohol in the blood by grams per deciliter.
BIA Area Certification Acceptance Plan A plan prepared by a specific area office which delineates how it will meet certification acceptance requirements under 23 U.S.C., Section 117(a). {This section of law was deleted in the Transportation Equity Act for the 21st Century. CA is being replaced by Stewardship Agreements.}
BIA Atlas Map A series of maps which depict the IRR/BIA road system by reservation and jurisdictions.
Bulk Carrier (Water) A ship with specialized holds for carrying dry or liquid commodities, such as oil, grain, ore, and coal, in unpackaged bulk form. Bulk carriers may be designed to carry a single bulk product (crude oil tanker) or accommodate several bulk product types (ore/bulk/oil carrier) on the same voyage or on a subsequent voyage after holds are cleaned.
Bridge Management System (BMS) A systematic process that provides, analyzes, and summarizes bridge information for use in selecting and implementing cost-effective bridge construction, rehabilitation, and maintenance programs
Bicycle A vehicle having two tandem wheels, propelled solely by human power, upon which any person or persons may ride. (23CFR217)
BIA/FHWA Memorandum of Agreement An agreement between the BIA and the FHWA which contains mutually agreeable roles and responsibilities for the administration of the IRR and Highway BridgeReplacement and Rehabilitation programs.
Blind Spot An area from which radio transmissions and/or radar echoes cannot be received. The term is also used to describe portions of the airport not visible from the control tower. (FAA4)
Brake An energy conversion mechanism used to stop, or hold a vehicle stationary. (49CFR393)
BIA Classification of Roads An identification of specific roads or trails that take into account current and future traffic generators, and relationships to connecting or adjacent BIA, State, county, Federal, and/or local roads.
Budget Authority Empowerment by Congress that allows Federal agencies to incur obligations that will result in the outlay of funds. This empowerment is generally in the form of appropriations. However, for most of the highway programs, it is in the form of contract authority.
Bodily Injury Injury to the body, sickness, or disease including death resulting from any of these. (49CFR387)
Blood Alcohol Concentration (BAC) Is measured as a percentage by weight of alcohol in the blood (grams/deciliter). A positive BAC level (0.01 g/dl and higher) indicates that alcohol was consumed by the person tested. A BAC level of 0.10 g/dl or more indicates that the person was intoxicated. (NHTSA3)
Bus Large motor vehicle used to carry more than 10 passengers, including school buses, intercity buses, and transit buses.
Bureau Of Economic Analysis (BEA) The Bureau of Economic Analysis is an agency of the U.S. Department of Commerce
Bureau Of Labor Statistics (BLS) The Bureau of Labor Statistics (BLS) is the principal fact-finding agency for the Federal Government in the broad field of labor economics and statistics. The BLS is an independent national statistical agency that collects, processes, analyzes, and disseminates essential statistical data to the American public, the U.S. Congress, other Federal agencies, State and local governments, business, and labor. The BLS also serves as a statistical resource to the Department of Labor. BLS data must satisfy a number of criteria, including relevance to current social and economic issues, timeliness in reflecting today's rapidly changing economic conditions, accuracy and consistently high statistical quality, and impartiality in both subject matter and presentation.
Bureau of Transportation Statistics (BTS) The Bureau was organized pursuant to section 6006 of the Intermodal Surface Transportation Efficiency Act (ISTEA) of 1991 (49 U.S.C. 111), and was formally established by the Secretary of Transportation on December 16, 1992. BTS has an intermodal transportation focus whose missions are to compile, analyze and make accessible information on the Nation's transportation systems; to collect information on intermodal transportation and other areas; and to enhance the quality and effectiveness of DOT's statistical programs through research, the development of guidelines, and the promotion of improvements in data acquisition and use. The programs of BTS are organized in six functional areas and are mandated by ISTEA to 1) Compile, analyze, and publish statistics 2) Develop a long-term data collection program 3) Develop guidelines to improve the credibility and effectiveness of the Department's statistics 4) Represent transportation interests in the statistical community 5) Make statistics accessible and understandable and 6) Identify data needs. (OFR1)
Bow The front of a vessel. (MARAD2)
BIA Roads System Those existing and proposed roads for which the BIA has or plans to obtain legal right(s)-of-way. This includes only roads for which the BIA has the primary responsibility to construct, improve, and maintain. Any additions or deletions to this system must be supported by resolution from the ITG.

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