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. A few rules were followed in deciding what to renumber:
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).