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The 'Public Subway' sign at this transit system entrance refers to the pedestrian subways underneath the junction, not to the London Underground.. In the United States, as used by the California Department of Transportation and in parts of Pennsylvania such as Harrisburg, Duncannon and Wyoming County, subway refers to a depressed road undercrossing.
An alternative to surface or above-ground freeway construction has been the construction of underground urban freeways using tunnelling technologies. This has been employed in Madrid and Prague , as well as the Australian cities of Sydney (which has five such freeways), Brisbane (which has three), and Melbourne (which has two).
The amendments added two exclusions to the definition of underground injection: ""(i) the underground injection of natural gas for purposes of storage; and (ii) the underground injection of fluids or propping agents (other than diesel fuels) pursuant to hydraulic fracturing operations related to oil, gas, or geothermal production activities. [25]
Holiday Drive onto/off Southbound 427; Eringate Drive onto/off Southbound 427; Valhalla Inn Road onto Northbound 427; Quebec: Many autoroutes in the Montreal area (including the A-40, A-520, A-13, A-15 and A-25) maintain networks of frontage roads along at least some of their lengths as they pass through urban/developing areas.
The Manual on Uniform Traffic Control Devices for Streets and Highways (usually referred to as the Manual on Uniform Traffic Control Devices, abbreviated MUTCD) is a document issued by the Federal Highway Administration (FHWA) of the United States Department of Transportation (USDOT) to specify the standards by which traffic signs, road surface markings, and signals are designed, installed ...
Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig. Directional boring offers significant ...
Chapter 2 (1 CFR 51) concerns the incorporation by reference of outside documents into the Federal Register, thereby making them a part of the Federal Register. Regulations include the circumstances under which the Director of the Federal Register will approve incorporation, how to request approval, which publications are eligible, the proper language for citing incorporated publications, and ...
The purpose of the drill is to create a tunnel under surface obstructions. First, the operator surveys the area and the obstacle (road, sidewalk, driveway). Utility locators must supervise any underground work, and the path most clear of utilities is chosen to send the tool through. The first hole is dug on one side of the obstacle.