Erratic maneuvers as an interchange-design feedback tool. Paper presented at the 54th Annual Meeting of the Transportation Research Board TRB, Washington, January 1975.

Establishing basic design, safety and aesthetic standards and criteria for interchanges does not guarantee that there will be no problems. The designer still faces a high degree of uncertainty regarding the actual operating characteristics of each completed facility. Iterative design adds a degree of dynamism to a basically static process. An initial-design is developed, evaluation criteria are applied, and through feedback, the design is modified. A driver behaviour analysis is conducted by using videotape recorders.