In the body text of articles, the first occurrence of a term to be abbreviated should be spelt out in full with the abbreviation to be used in the rest of the article following immediately afterwards in parentheses. An exception to this rule are those abbreviations and formats listed at Wikitravel:Currency, Wikitravel:Time and date formats and Wikitravel:Measurements
These abbreviations should be uniform and consistent and generally should not include full stops or periods.
To indicate approximately, use the un-italicized abbreviation "c. " (followed by a space) rather than circa, ca., or approx.
In prose, use "and" rather than an ampersand: &
Using abbreviations is encouraged in listings.
Editors may want to choose the appropriate abbreviation from those below which are both widely understood and unambiguous. However, don't knock yourself out "correcting" Rt to Rte - there is more important work to be done in plunging forward and writing the World's most complete, up-to-date and accurate free Travel Guide!
Note: The abbreviations below are emboldened for clarity of exposition but, of course, we don't use bold face for abbreviations in Wikitravel articles just because it's an abbreviation!