Why don't the NJTA take advantage of the new sign installations to convert the sequential exit numbers to mile based numbers like nearby CT is doing?
Years ago an engineer William Buckley said that the NJTA has always had a goal of going mile based with its exits but could not because of competition from other turnpike worthwhile projects, but now opportunity arises. The costs can be defrayed as these new MUTCD compliant signs have tabs already that would host the new numbering. Only added OLD or FORMER tabs would be extra, but the labor costs would not change.
Well, for one, the sign replacement project only covers the northern half of the Turnpike. All signs south of 9 won't be replaced for a while (8A to 6 were replaced with classic signage during the dual-dual extension and 5 to 1 were replaced in the mid aughts). Secondly, who knows how hard it would be for them to reprogram all their toll equipment to handle different exit numbers and then the cost of printing new tickets. Also, I honestly just don't think there's any real interest on the Authority's part to change the exit number scheme.