These location marker examples have been chosen because each has a novel feature over and above route and location identification.
India on Indian Highway 58 The Indian location markers carry a number of different distances. The marker illustrated carries the following information: :*
National Highway 58 :*180 kilometres from the start of the highway (in
Delhi) :*24 kilometres to the next big city -
Haridwar :*352 kilometres to the last town on the route -
Mana, India (which is close to
Mana Pass on the
Tibetan/
Chinese border, the terminus of the route).This is extremely false. Although the sign illustrated uses Latin script, a number of Indian location markers use the Indian official language
Hindi or the predominant language of the state in which they are located.
Ireland Location reference indicator (LRI) signs are provided on
motorways and
dual carriageway national roads. They indicate the route number of the route being travelled on, the direction of travel (N, S, E, and W for north, south, east and west) and the distance from the start point of the route. LRI signs are placed every 500 metres. LRI signs are supplemented with location reference markings (LRM), which are road markings painted in the
hard shoulder parallel to the road. They contain the same information as LRIs, though the letter from the route number is omitted. They are placed every 100 metres and also indicate the direction to the nearest
emergency telephone.
Italy The highway location markers in Italy are part of the category of distance signs, subcategory of indication signs, and are of two types, those that indicate the distance in
kilometers and those that indicate the distance in
hectometers (100-metre intervals). In Italy, until before 1959, the function of mileage signals was performed by
milestones. In the Consolidated Law Regulation of 1959, figure 103b mentions the use of the motorway confirmation sign, consisting of a white box on the left with the distance from the point of origin of the road and a blue rectangle with white characters in which the name of the next exit is shown with the relative distance in kilometers. In the circular of the
Ministry of Public Works n. 9540/1969 "Motorway signs", signs with a similar function have been adopted to be installed on the traffic island. ). In Italy the highway location marker is a square white sign with the current kilometer (of hectometer) of the road written on it. This sign is accompanied by the sign that identifies the road if it indicates the kilometers (or hectometers) of a state, regional, provincial or extra-urban municipal road. If the sign indicates kilometers of a motorway the sign is accompanied by a green sign (positioned to the right or below the main sign) indicating the next exit with the distance remaining if the kilometer ends in 1, 3, 4, 6, 7 or 9, the next service area with the remaining distance if the kilometer ends with 2, 5 and 8 or the highway with the remaining distance if the kilometer ends with 0. To mark the distance from the starting point of a road, progressive hectometric signs are also used. These signs are placed every and carry a two-line indication, such as . The sign indicates in the lower part the kilometer of the last kilometer progressivity sign (if you travel the road from the starting point) or of the next one (if you travel the road from the end point) and indicates in the upper part the hectometers in Roman numerals the distance to the last sign (if you drive the road from the starting point) or the remaining distance to the next sign (if you drive the road from the ending point). These signs are positioned on all types of extra-urban roads whose length is such as to make their use appropriate. Major British dual-carriageway roads have marker posts at 100-metre intervals. These posts, which are used for administrative purposes, give the distance in kilometres from some reference point. The digits on the posts are not designed to be used by the general public. There are no fixed rules for determining the reference points: they may be the centre of a city, an administrative boundary or follow some other rule. Marker posts on
motorways also have arrows that point to the closest emergency telephone. The advent of the mobile phone required a government rethink regarding marker posts. This has led to the erection of driver location signs in England (but at the time of writing, not in Scotland, Wales or Northern Ireland) at about 500 metre (about 1/3 mile) intervals on many motorways. Driver location signs have three pieces of information: • The road identifier • The carriageway identifier • The location The location is identical to the location given on marker posts. The most commonly used carriageway identifiers are the letters "A", "B", "J", "K", "L" and "M". The letter "A" normally denotes the carriageway in the direction of increasing location numbers (usually away from London), "B" the carriageway in the direction of decreasing location numbers while "J", "K", "L" and "M" denote junction slip roads.
United States In the U.S.
Interstate Highway System, the numbers usually measure the distance to the southern or western
state line, or the route's terminus, if the national southern or western terminus lies in that state. The numbering system for other
highways varies by state; most use a system mirroring that of the Interstate System, other states, such as
Illinois,
California, and
Kentucky, use the
county line as the
zero mile marker, while others, including
Missouri, do not sign mile-markers at all (except on Interstates).
Arizona has a rather unusual system, where a route's mileposts continue those from its original host. Often, the
exits are numbered according to the nearest milepost, known as the
mile-log system. From the beginning of the Interstate system until the mid-2000s, most Interstate highways had markers every mile. Since that time, many states have installed more markers every 0.25 mile, every 0.2 mile, or in some metro areas, every 0.1 mile. Some historic and
scenic routes – such as along the
Blue Ridge Parkway in
North Carolina and
Virginia and the
Overseas Highway of the
Florida Keys – use mileposts to mark points of interest or (in the cases of many businesses along the Overseas Highway) as a portion of their address. Except in California (discussed below),
mileposts are placed on interstate highways (and other major routes in some states) at one-mile intervals that indicate the distance through a state. Mileposts normally start at the western or southern point of entry of the route into the state, or the southern or western terminus of the route within the state, and increase heading north or east. Many states have added supplemental reference markers that indicate distance in fractional miles (tenth, quarter, half, etc.) in addition to mileposts for whole miles, either across the entire state or in select regions of the state.
California California uses a postmile system on all of its
state highways, including
U.S. Routes and
Interstate Highways. The postmile markers indicate the distance a route travels through individual counties, as opposed to mile markers that indicate the distance travelled through a state. Multiple other states, including
Nevada,
Ohio, and
Tennessee, use similar county-based mile markers on non-interstates, but use standard mileposts on interstate routes.
New York New York reference markers are plates 8 in by 10 in (252 mm by 200 mm) that have three rows of numbers. Since the lettering is small (60 mm, 2.4 in), they are designed for use by highway engineers rather than motorists. The first row displays the route number, the second row the
NYSDOT Region, and the third row the control segment and distance from the segment start. The control segment has one digit while the distance from the start of the segment has three digits and is given in units of tenths of a mile.
Vermont uses a similar reference marker system on non-interstate routes.
New England The
New England road marking system was a regional system of marked
numbered routes in the six-state region of
New England in the United States. The routes were marked by a yellow rectangular sign with black numbers and border. Many signs were painted on
telephone poles. The routes were approved by the
highway departments of the six New England states in April 1922. Prior to the New England road marking system, through routes were mainly marked with colored bands on telephone poles. These were assigned by direction (red for east–west, blue for north–south and yellow for intermediate or diagonal routes). The
Massachusetts Highway Commission convinced the rest of southern New England and
New York to use this system in 1915 (
New Hampshire and
Vermont already had their own schemes, and
Maine also opted out), and it was the main system until 1922. The New England road marking system, while limited to New England, was designed for expansion to the whole country. One- and two-digit numbers were assigned to major interstate routes, with three-digit routes for
state routes (marked in a rectangle, with the
state abbreviation below the number). In general, odd numbers ran east–west and even numbers ran north–south. The main exception was
Route 1, which was to run along the
Atlantic coast from
Florida to
Calais, Maine. A few of the major
auto trails were not to be assigned numbers, instead being marked with letters—for instance, L for the
Lincoln Highway and R for the
Roosevelt International Highway. In 1926, several of the routes were supplanted by the national
United States Numbered Highway System. Except for Route 1, which became
U.S. Route 1, the old numbers were not used, since the U.S. Highway System uses odd numbers for north–south routes and even numbers for east–west routes. While some of the routes that did not become U.S. Routes were disbanded in the 1930s, many of these routes were transferred to
state highway systems, often retaining their original route numbers.
Zimbabwe Zimbabwean milestones are constructed of cast concrete painted white with the kilometre distance indented and painted black.{{cite web There is no distinction between state and national road-sign markings. They were originally sited every 500 metres by the
Rhodesian Ministry of Roads and Road Traffic, starting at zero from the largest town or city. In 1980, the Zimbabwean government began placing new markers 1 km apart and damaged or missing half kilometre markers were no longer replaced. ==Identifiers on road concurrencies==