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Maryland Route 390
Maryland Route 390 (MD 390) is a state highway in the U.S. state of Maryland. The highway runs from 16th Street at the District of Columbia boundary north to MD 97 within Silver Spring. MD 390 is a six-lane divided highway continuation of 16th Street into Maryland and serves as a western bypass of downtown Silver Spring. The portion of the highway south of MD 410 was constructed around 1930. MD 390 was extended north to MD 97 as a divided highway in the late 1950s. Route description MD 390 begins at Blair Portal traffic circle at the boundary between the District of Columbia and Maryland. 16th Street Northwest heads south from the circle toward the White House. The circle also includes junctions with Eastern Avenue, North Portal Drive, and MD 384 (Colesville Road), which leads to U.S. Route 29 in downtown Silver Spring. There is no direct access from southbound MD 390 to MD 384; southbound MD 390 traffic must travel around Blair Portal to access the other state highway. MD ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
16th Street NW
16th Street Northwest is a prominent north–south thoroughfare in the northwest quadrant of Washington, D.C. Part of Pierre L'Enfant's design for the city, 16th Street begins just north of the White House across Lafayette Park at H Street and continues due north in a straight line passing K Street, Scott Circle, Meridian Hill Park, Rock Creek Park, and the Walter Reed Army Medical Center before crossing Eastern Avenue into Silver Spring, Maryland, where it ends at Georgia Avenue. From K Street to the District line, 16th Street is part of the National Highway System. The Maryland portion of the street is designated Maryland State Highway 390. The entire street is long. The Washington meridian, a prime meridian once in use in the United States, follows the street. Part of the street is listed on the National Register of Historic Places as Sixteenth Street Historic District. and In June 2020, the section immediately north of the White House was renamed Black Lives Matter Pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reverse Curve
In civil engineering, a reverse curve (or "S" curve) is a section of the horizontal alignment of a highway or railroad route in which a curve to the left or right is followed immediately by a curve in the opposite direction. On highways in the United States reverse curves are often announced by the posting of a W1-4L sign (left-right reverse curve) or a W1-4R sign (right-left reverse curve), as called for in the Manual on Uniform Traffic Control Devices. Reverse curves on the Northeast Corridor in the USA hinder the development of high-speed rail. Reverse curves cause buffer-locking. See also *S bridge * Road curve *Track geometry Track geometry is concerned with the properties and relations of points, lines, curves, and surfaces in the three-dimensional positioning of railroad track. The term is also applied to measurements used in design, construction and maintenance of t ... References Railway track layouts {{engineering-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
State Highways In Maryland
Maryland has an extensive system of state highways, exclusive of the national Interstate and U.S. highway systems, that serves all 23 counties and the independent city of Baltimore, almost every incorporated city, town, and village, and most unincorporated places in the state. These highways are each designated Maryland Route X, where X is a number between 2 and 999. The highways are typically abbreviated MD X, although MD Route X and Route X are used less frequently. Because Maryland does not have a secondary route system or signed county route systems, all state highways are part of the main numerical system. That means the same set of numbers is used for both major highways and minor service roads, and almost every number has been used at one time or another. The Maryland State Highway Administration constructs and maintains the vast majority of state highways in the 23 counties of Maryland. The Baltimore City Department of Transportation maintains all state highways within ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Highway System (United States)
The National Highway System (NHS) is a network of strategic highways within the United States, including the Interstate Highway System and other roads serving major airports, ports, military bases, rail or truck terminals, railway stations, pipeline terminals and other strategic transport facilities. Altogether, it constitutes the largest highway system in the world. Individual states are encouraged to focus federal funds on improving the efficiency and safety of this network. The roads within the system were identified by the United States Department of Transportation (USDOT) in cooperation with the states, local officials, and metropolitan planning organizations (MPOs) and approved by the United States Congress in 1995. Legislation The Intermodal Surface Transportation Efficiency Act (ISTEA) in 1991 established certain key routes such as the Interstate Highway System, be included. The act provided a framework to develop a National Intermodal Transportation System which "cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georgia Avenue
Georgia Avenue is a major north-south artery in Northwest Washington, D.C. and Montgomery County, Maryland. Within the District of Columbia and a short distance in Silver Spring, Maryland, Georgia Avenue is also U.S. Route 29. Both Howard University and Walter Reed Army Medical Center are located on Georgia Avenue. Geography Georgia Avenue begins north of Florida Avenue, which was the boundary of the Old City, and is a continuation of 7th Street. Traveling northward, the street passes Howard University and Fort Stevens. At Eastern Avenue, the road crosses into Montgomery County and passes through Silver Spring. Where it crosses Colesville Road a mile into Maryland, Georgia Avenue splits off U.S. Route 29 and becomes Maryland State Highway 97. Georgia Avenue ends at the boundary with Howard County, where it becomes Roxbury Mills Road. The total length of the road is about 24 miles (39 km), of which 5 miles (8 km) are in Washington, D.C. History The original Georgia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red Line (Washington Metro)
The Red Line is a rapid transit line of the Washington Metro system, consisting of 27 stations in Montgomery County, Maryland, and Washington, D.C., in the United States. It is a primary line through downtown Washington and the oldest and busiest line in the system. It forms a long, narrow "U", capped by its terminal stations at Shady Grove and Glenmont. Trains run most frequently during morning and evening rush hours (nominally four to eight minutes apart) and least frequently after 9:30 p.m. (nominally 15 to 18 minutes apart). The Red Line is the only line in the system that does not share its tracks with another Metrorail line, though it does operate along gauntlet track shared with CSX Transportation freight trains along the railroad's Metropolitan Subdivision from the D.C. neighborhood of Brentwood north past Silver Spring, Maryland. History Planning for Metro began with the Mass Transportation Survey in 1955, which attempted to forecast freeway and mass tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington Metro
The Washington Metro (or simply Metro), formally the Metrorail,Google Books search/preview is a rapid transit system serving the Washington metropolitan area of the United States. It is administered by the Washington Metropolitan Area Transit Authority (WMATA), which also operates the Metrobus (Washington, D.C.), Metrobus and Metrorail services under the Metro name. Opened in 1976, the network now includes six lines, 97 stations, and of Network length (transport)#Route length, route. Metro serves Washington, D.C., as well as several jurisdictions in the states of Maryland and Virginia. In Maryland, Metro provides service to Montgomery County, Maryland, Montgomery and Prince George's County, Maryland, Prince George's counties; in Virginia, to Arlington County, Virginia, Arlington, Fairfax C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brunswick Line
The Brunswick Line is a MARC commuter rail line between Washington, D.C., and Martinsburg, West Virginia, with a branch to Frederick, Maryland. It primarily serves the northern and western suburbs of Washington. The line, MARC's second longest at 74 miles, is operated under contract to MARC by Alstom and runs on CSX-owned track, including the Metropolitan, Old Main Line, and Cumberland Subdivisions. It is the successor to commuter services provided by the Baltimore & Ohio Railroad (B&O), which date to the mid-19th century. History Prior to MARC, the B&O operated commuter trains between Washington and Martinsburg, which continued even after the start of Amtrak on May 1, 1971. Maryland began subsidizing the trains in 1974 and, in 1975, assumed full responsibility for the subsidy and equipment replacement. West Virginia followed suit soon after, guaranteeing service to its stations. In 1983, Marylandalong with a number of other Northeastern statestook control of its commuter rail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MARC Train
MARC (Maryland Area Rail Commuter) is a commuter rail system in the Baltimore–Washington metropolitan area. MARC is administered by the Maryland Transit Administration (MTA) and operated under contract by Alstom and Amtrak on track owned by CSX Transportation (CSXT) and Amtrak. In , the system had a ridership of , or about per weekday as of , much less then the pre-pandemic daily ridership of 40,000 per weekday. With trains reaching speeds of , MARC has the highest top speed of any commuter railroad in the United States. Operations MARC has three lines that radiate from Washington Union Station, Union Station in Washington, D.C.: the Brunswick Line (18 weekday trains), the Camden Line (21 weekday trains), and the Penn Line (58 weekday trains). The Penn Line is the only line with weekend service, having 18 trains on Saturdays and 12 on Sundays. Service is reduced or suspended on certain Federal holidays. All MARC trains operate in Push-pull train, push-pull mode. The contro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metropolitan Subdivision
The Metropolitan Subdivision is a railroad line owned and operated by CSX Transportation in the District of Columbia and the U.S. state of Maryland. The 79-mile line runs from Washington, D.C., northwest to Weverton, Maryland, along the former Metropolitan Branch of the Baltimore and Ohio Railroad.CSX Transportation"Northern Region, Baltimore Division, Timetable No. 4." Effective 2005-01-01. At its southeast end, north of Union Station, the Metropolitan Subdivision meets the Capital Subdivision (formerly called the B&O Washington Branch) and Amtrak's Northeast Corridor. It meets the Old Main Line Subdivision at Point of Rocks, Maryland. At its northwest end in Weverton, the line joins the Cumberland Subdivision. MARC Train's Brunswick Line uses the entire subdivision, as does Amtrak's ''Capitol Limited''. The Red Line of the Washington Metro shares right-of-way with the subdivision along two separate stretches in Maryland and D.C.: from the junction with the Capital Subdivi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CSX Transportation
CSX Transportation , known colloquially as simply CSX, is a Class I freight railroad operating in the Eastern United States and the Canadian provinces of Ontario and Quebec. The railroad operates approximately 21,000 route miles () of track. The company operates as the leading subsidiary of CSX Corporation, a Fortune 500 company headquartered in Jacksonville, Florida. CSX Corporation (the parent of CSX Transportation) was formed in 1980 from the merger of Chessie System and Seaboard Coast Line Industries, two holding companies which controlled a number of railroads operating in the Eastern United States. Initially only a holding company itself, the subsidiaries that made up CSX Corporation were gradually merged, with this process completed in 1987. CSX Transportation formally came into existence in 1986, as the successor of Seaboard System Railroad. In 1999, CSX Transportation acquired approximately half of Conrail, in a joint purchase with competitor Norfolk Southern Rai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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