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Publication 28 - Postal Addressing Standards >
3 Business Addressing Standards > 35 Address Data Element Compression Guidelines > 3512 Vowel Removal
It is recommended that vowels not be removed if the desired address data element compression can be obtained by first using standard word abbreviations.
From the right side of the address line, beginning with the rightmost word, remove vowels as necessary on a word–by–word basis to achieve desired compression. Leave the last vowel; if the first character of a word is a vowel, do not remove that character. It is also recommended that the vowels not be removed from the leftmost words.