# Sat-nav

**URL:** <https://boards.straightdope.com/t/sat-nav/152923>\
**Category:** Factual Questions\
**Created:** [February 5, 2003, 11:13am UTC](https://boards.straightdope.com/t/sat-nav/152923 "2003-02-05T11:13:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Jammers](https://avatars.discourse-cdn.com/v4/letter/j/a183cd/32.png) [@Jammers](https://boards.straightdope.com/u/Jammers)\
**Post date:** [February 5, 2003, 11:13am UTC](https://boards.straightdope.com/t/sat-nav/152923/1 "2003-02-05T11:13:26Z")

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Would they be able to incorporate parking aids into SAT-NAV units in cars. ie use satellite technology to tell us where there are spaces in a car park, city centre etc. How cool would that be?

Jxx

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**Author:** ![UncleBill](https://avatars.discourse-cdn.com/v4/letter/u/d26b3c/32.png) [@UncleBill](https://boards.straightdope.com/u/UncleBill)\
**Post date:** [February 5, 2003, 1:06pm UTC](https://boards.straightdope.com/t/sat-nav/152923/2 "2003-02-05T13:06:38Z")

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Most Sat Nov devices are receivers, this would need the more expensive Transmitters at all the parking spots. Possible, but prolly not worth it. A local system with a tower would be less expensive.

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**Author:** ![hobbes730](https://avatars.discourse-cdn.com/v4/letter/h/97f17d/32.png) [@hobbes730](https://boards.straightdope.com/u/hobbes730)\
**Post date:** [February 6, 2003, 12:46am UTC](https://boards.straightdope.com/t/sat-nav/152923/3 "2003-02-06T00:46:10Z")

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Maybe, but if you’re talking about GPS, the resolution/accuracy probably wouldn’t be good enough to accurately keep track of tightly parked cars. UncleBill is right, a local system would be much more effective.