d1.1. U.S., CEO, CHT (College Hill Tavern), TV, MBA, RN, RV (recreational vehicle).
d1.2. May omit periods in MBA, RN, RV.
d1.3. But continue to spell out vice president, New York City, state name unless it is used with a city. In that case, abbreviate state name using traditional abbreviations (not zip code, two-capital letter abbreviations). Zip code abbreviations for states may only be used with a complete address when the street, city, and state are given.
d1.4. Roadway names (follow AP Style). Abbreviate Ave., Blvd., and St. with a numbered address; spell out and capitalize when used without a number. All similar words (alley, drive, road, terrace, etc.) are always spelled out. Always use figures for an address number. Spell out and capitalize First through Ninth when used as street names. Use figures with two letters for 10th and above: 7 Fifth Ave., 100 21st St.
d1.5. Months. Abbreviate the name of a month only when used with an exact date. Jan. 2, 1984. Spell out the month when used alone.