Since 2010, the Regional Transportation System Management and Operations Plan has guided agencies in making coordinated investments in Portland region’s transportation systems. The Plan defines TSMO as a set of integrated transportation solutions intended to improve the performance of the existing transportation infrastructure, through a combination of Transportation System Management and Transportation Demand Management strategies. The 2010 TSMO Plan defined four functional areas for investment:
- multimodal traffic management
- traveler information
- traffic incident management
- transportation demand management.