On January 1, 1953, the New Jersey Highway Department renumbered many of the State Routes.
This renumbering was first proposed in 1951 in order to reduce confusion to motorists.
[1] A few rules were followed in deciding what to renumber:[2] New numbers assigned semi-arbitrarily included 15 and 20 (13-20 were not assigned in the 1927 renumbering), the sequence from 57 to 93, and 152 to 165 for minor routes (continuing from pre-renumbering 151).
[3] In the table, S routes (like S1 and S1A) is shown with the S after the number (like 1S and 1SA) for sorting reasons.