TRAFFESSIONALS staff were involved in a submitted tender for the NZ Transport Agency design & build contract for ramp metering on Aucklands Northwestern motorway in 2006.  This work involved a first-principles analysis of the hardware and operating procedures, communications with United States practitioners, and an alternative tender proposal for unmarked dual-lane operation that would have reduced construction costs and potentially improved traffic safety (although this was not taken any further).  The submitted tender was accepted and design work followed through to construction in the subsequent few years.