W & S Solutions, LLC was established in 2009. It is a transportation-consulting firm servicing US with an office in China. Its office in China, is a business partner and a distributor of TSS (Aimsun), INRO (Emme and EMME/2) and Transoft Solution (AutoTurn, ParkCAD and AeroTurn) and Trafficware (Synchro and Simtraffic). With its offices in San Francisco and Shanghai, our projects range in size from short-term engagements developing meaningful traffic solutions for a wide range of transportation issues, to long-term planning for new developments, communities, and transportation systems.

Its primary service categories include transportation modeling training, transportation modeling software consulting, transportation visualization, distributions of leading software providers , the transportation demand forecasting modeling, and traffic simulations. It helps firms by providing its unique services to perform specialized modeling tasks for Traffic Studies, Intelligent Transportation Systems, Traffic Control Systems, and Transportation Planning. 

Since its establishment, the firm has serviced the following clients:

·       City of Palo Alto,

·       City of Vacaville,

·       South San Francisco,

·       City of Redwood City,

·       Humboldt County in California and

·       TJKM Transportation Consultants.

In addition, its members have served both public and private clients for more than two decades, successfully in Columbus of Ohio, many cities in California, Nevada, in countries such as Canada, Chile, and China. Its local experience is in the San Francisco Bay Area and San Joaquin Central Valley. 

W & S Solutions is a qualified SBA and DBE firm with certifications from California (depending on a final approval soon).