Page "State highways in New Jersey" Paragraph 4
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Cutout state route marker used prior to 1953After a failed renumbering in 1926, a completely new numbering was instituted in 1927, with only four sections of pre-1927 routes remaining as their old numbers suffixed with N-Route 4N, Route 5N, Route 8N and Route 18N.
The new numbers followed a general geographical pattern from north to south-1-12 in northern New Jersey, 21-28 roughly radiating from Newark, 29-37 from Trenton, 38-47 from Camden, and 48-50 in southern New Jersey.
Some short routes were assigned prefixes of S ; for instance, Route S26 was a spur of Route 26 south of New Brunswick.
As the system grew, some numbers beyond 50 were used, but most new routes received prefixed or suffixed labels.
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