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Trap street

Trap street is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Trap street rather than just read about it. In short: In cartography, a trap street is a fictitious entry in the form of a misrepresented street on a map, often outside the area the map nominally covers, for the purpose of "trapping" plagiarists of the map who, if caught, would be unable to explain the inclusion of the "trap street" on their map as innocent. On maps that are not of streets, other "trap" features (such as nonexistent towns, or mountains with the wrong e…

Key takeaways

  • Trap street belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Trap street to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Trap street from memory before moving on to harder problems.

Reference excerpt

In cartography, a trap street is a fictitious entry in the form of a misrepresented street on a map, often outside the area the map nominally covers, for the purpose of "trapping" plagiarists of the map who, if caught, would be unable to explain the inclusion of the "trap street" on their map as innocent. On maps that are not of streets, other "trap" features (such as nonexistent towns, or mountains with the wrong elevations) may be inserted or altered for the same purpose. Trap streets are often nonexistent streets, but sometimes, rather than actually depicting a street where none exists, a map will misrepresent the nature of a street in a fashion that can still be used to detect copyright violators but is less likely to interfere with navigation. For instance, a map might add nonexistent bends to a street, or depict a major street as a narrow lane, without changing its location or its connections to other streets, or the trap street might be placed in an obscure location of a map that is unlikely to be referenced. Trap streets are rarely acknowledged by publishers. One exception is a popular driver's atlas for the city of Athens, Greece, which has a warning inside its front cover that potential copyright violators should beware of trap streets.

Legal issues

In the United States In Nester's Map & Guide Corp. v. Hagstrom Map Co. (1992), the United States District Court for the Eastern District of New York held that trap streets are not copyrightable under the federal law of the United States. The court stated:To treat "false" facts interspersed among actual facts and represented as actual facts as fiction would mean that no one could ever reproduce or copy actual facts without risk of reproducing a false fact and thereby violating a copyright ... If such were the law, information could never be reproduced or widely disseminated."

In the United Kingdom In a 2001 case, The Automobile Association in the United Kingdom agreed to settle a case for £20,000,000 when it was caught copying Ordnance Survey maps. In this case, the identifying "fingerprints" were not deliberate errors but rather stylistic features such as the width of roads.

In Singapore In another case, the Singapore Land Authority sued Virtual Map, an online publisher of maps, for infringing on its copyright. The Singapore Land Authority stated in its case that there were deliberate errors in maps they had provided to Virtual Map years earlier. Virtual Map denied this and insisted that it had done its own cartography.

Cultural references The 1979 science fiction novel The Ultimate Enemy by Fred Saberhagen includes the short story "The Annihilation of Angkor Apeiron" in which a salesman allows a draft of a new Encyclopedia Galactica to be captured by alien war machines. It leads them to believe there is a nearby planet ripe for attack, but the planet is actually a copyright trap and the aliens are led away from inhabited worlds, saving millions of lives. The 2010 novel Kraken by China Miéville features the trap streets of the London A–Z being places where the magical denizens of the city can exist without risk of being disturbed by normal folk. A 2013 film, Trap Street, inverts the usual meaning of a trap street, becoming a real street which is deliberately obscured or removed from a map—and anyone who attempts to identify it by placing it on public record is then "trapped". The 2015 Doctor Who episode "Face the Raven" features a hidden street where alien asylum seekers have taken shelter. Due to a psychic field that subconsciously makes observers ignore it, outsiders consider it a trap street when they see it on maps. One scene involves the character Clara Oswald discussing the definition of "trap street". The episode's working title was also "Trap Street".

See also Agloe, New York – Fictional place in New York state, USA Argleton – Phantom settlement in England on Google Maps Beatosu and Goblu, Ohio – Fictional towns Fictitious entry – Deliberately incorrect entry in a reference work Ghost town – Abandoned settlement with intact features Honeytoken – Entries in a database to track stolen data Paper street – Non-existent street on maps or plans Phantom settlement – Settlement on a map that does not exist Phantom island – Island recorded on maps but proven nonexistent Watermark – Identification on paper to prevent counterfeiting

References

External links "The Straight Dope: Do maps have "copyright traps" to permit detection of unauthorized copies?". www.straightdope.com. The Straight Dope. 16 August 1991. Copyright Easter Eggs at OpenStreetMap

Worked examples

Example 1 — a first encounter with Trap street

Start with the simplest possible case. Write down what Trap street claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Trap street before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Trap street ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Trap street

In research
Trap street appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Trap street in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Trap street is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cartography, Fictional streets and roads, Fictitious entries, so understanding it makes those chapters shorter.
In everyday life
Look for Trap street outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Trap street in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Trap street means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Trap street out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Trap street in simple terms?

In cartography, a trap street is a fictitious entry in the form of a misrepresented street on a map, often outside the area the map nominally covers, for the purpose of "trapping" plagiarists of the map who, if caught, would be unable to explain the inclusion of the "trap street" on their map as in…

Why does Trap street matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Trap street?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Trap street.

Tags

  • Cartography
  • Fictional streets and roads
  • Fictitious entries
  • Intellectual property law
  • Phantom geographical features
  • Plagiarism detectors
  • Streets

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