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A road map or route map is a map that primarily displays roads and transport links rather than natural geographical information. It is a type of navigational map that commonly includes political boundaries and labels, making it also a type of political map. In addition to roads and boundaries, road maps often include points of interest, such as prominent businesses or buildings, tourism sites, parks and recreational facilities, hotels and restaurants, as well as airports and train stations. A road map may also document non-automotive transit routes, although often these are found only on transit maps.
The Turin Papyrus Map is sometimes characterized as the earliest known road map. Drawn around 1160 BC, it depicts routes along dry river beds through a mining region east of Thebes in Ancient Egypt.
The Dura-Europos Route map is the oldest known map of (a part of) Europe preserved in its original form. It is a fragment of a map drawn onto a leather portion of a shield by a Roman soldier in c. 235 AD. It depicts several towns along the northwest coast of the Black Sea.
The Tabula Peutingeriana, a copy of a scroll originally dating to about 350 AD, plots the extent of the Cursus publicus, the Roman road network that ran from Europe and North Africa to West Asia. It is highly schematic, compressing the Mediterranean Sea to a sliver and orienting the Italian Peninsula to run east-west.
In 1500, Erhard Etzlaub produced the "Rom-Weg" (Way to Rome) Map, the first known road map of medieval Central Europe. It was produced to help religious pilgrims reach Rome for the occasion of the "Holy Year 1500".
Rand McNally's first road map, the New Automobile Road Map of New York City & Vicinity, was published in 1904. Gousha was founded in 1926 by former Rand McNally employees. General Drafting was founded in 1909. These three companies produced most of the approximately eight billion free maps handed out at American filling stations over a period of about 1920 to 1980. The practice of offering free maps diminished considerably in the 1970s.
An alternative to, and in many ways the precursor of the road map, was the itinerarium, a listing of towns and other stops, with intervening distances. The Tabula Peutingeriana, mentioned above, is in effect an itinerarium in visual form, offering routes and distances with little geographical accuracy.
Road maps come in many shapes, sizes and scales. Small, single-page maps may be used to give an overview of a region's major routes and features. Folded maps can offer greater detail covering a large region. Electronic maps typically present a dynamically generated display of a region, with its scale, features, and level of detail specified by the user.
Road maps can also vary in complexity, from a simple schematic map used to show how to get to a single specific destination (such as a business), to a complex electronic map, which may layer together many different types of maps and information – such as a road map plotted over a topographical 3D satellite image (a viewing mode frequently used within Google Earth).
Highway maps generally give an overview of major routes within a medium to large region ranging from a few dozen to a few thousand miles or kilometers.
A road atlas is a collection of road maps covering a region as small as a city or as large as a continent, typically bound together in a book. Spiral binding is a popular format for road atlases, to permit lay-flat usage and to reduce wear and tear. Atlases may cover a number of discrete regions, such as all of the states or provinces of a given nation, or a single continuous region in high detail split across several pages.
In addition, many transport companies, such as train and airline companies, have published "road" maps in the past, in their case usually calling them "route map". In the past, these were usually published on print paper; since the advent of the internet, transport companies have used it increasingly to show their route maps instead of paper material in order to lower costs. Many old route maps are now considered collectible items and command increasing prices on auction sites and houses and on antique stores.
Printed road maps commonly include an index of cities and other destinations found on the map; smaller-scale maps often include indexes of streets and other routes. These indexes give the location of the feature on the map via a grid reference.
- Maps: finding our place in the world - James R. Akerman, Robert W. Karrow, Field Museum of Natural History, Newberry Library - Google Books
- Cartographies of Travel and Navigation - Google Books
- When Maps Reflected Romance of the Road - New York Times
- Michelin Travel & Lifestyle
- Gallup Map finds new path in a GPS world - Pittsburgh Post-Gazette
- Byzantine Trade, 4th-12th Centuries - Marlia Mundell Mango - Google Books
- Types of Maps - Learn about the Different Types of Maps
- History of Cartography, vol. 6: "American Promotional Road Mapping in the Twentieth Century". Cartography and Geographic Information Science.
- Check Road Maps of any location "Road Route Map".
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