State highway
From Wikipedia, the free encyclopedia
- This article is about the idea of state highways worldwide. For a specific highway in New Jersey, U.S.A. referred to in some signage as the State Highway, see: Route 139.
State highway, state road or state route can refer to one of three related concepts, two of them related to a state government in a country that is divided into states (including the United States, Australia and Mexico):
- A road numbered by the state, falling below numbered national highways (like U.S. Routes) in the hierarchy
- A road maintained by the state, including nationally-numbered highways
Depending on the state, state highway may be used for one meaning and state road or state route for the other. A third meaning, used in some countries such as New Zealand, uses the word "state" in its sense of a nation. By this meaning a state highway is a road maintained and numbered by the national government rather than local authorities.
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[edit] Terminology
The usage of the terms "state highway", "state route", etc. may vary from country to country or even from state to state. In the United States, it is not uncommon for the general public to use different conventions even within a particular state. For example, in Washington, a state highway would be referred to as S.R. 500 (for State Road 500). In Oregon, it could be referred to as OR 18 (for Oregon Route 18), while in Idaho it would be S.H. 51, short for State Highway.
[edit] National usage
[edit] Australia
Australia's State Route System is a system of urban and inter-regional routes that are not covered by the National Route System, or the National Highway System. These routes are marked with a blue shield. Sometimes a state route may be formed when a former national route is decommissioned.
[edit] New Zealand
New Zealand's state highway system is a nationwide network of roads covering the North and South Islands. As of 2006, just under 100 roads have a "State Highway" designation: Transit New Zealand administers them. The speed limit for most State Highways is 100 km/h, with reductions when a State Highway passes through a built-up area.
The highways were originally designated on a two-tier system, National (SH 1-8) and Provincial, with national highways having a higher standard and funding priorities. Now all are State Highways, and the network consists of SH 1 running the length of both main islands, SH 2-5 and 10-58 in the North Island, and SH 6-8 and 60-99 in the South Island. National and Provincial highways are numbered approximately North to South. State Highway 1 runs the length of both islands.
[edit] United States
State highways are generally a mixture of primary and secondary roads, although some are freeways (for example, Route 128 in Massachusetts, or parts of Route 101 in New Hampshire). Each state has its own system for numbering and its own marker. The default marker is a white circle containing a black sans serif number (often inscribed in a black square or slightly rounded square), according to the Manual on Uniform Traffic Control Devices. However each state is free to choose a different marker, and many states have. Often, states will choose something related to their state such as Pennsylvania, the keystone state, which has chosen a keystone outline to distinguish state highways. Other states use an outline of the state. Many states have a secondary set of state roads; Missouri uses letters for these roads.
