“If this technology is going to yield benefits for the consumer, we want to make sure it works in the city of Boston,” said Chris Osgood, the city’s chief of streets. “We want to make sure we’re doing our due diligence and understanding what the implications are. How do we set up the right policies and take the right approach to this so it’s going to have the biggest net benefit?” The partnership with the Switzerland-based WEF, which will be formally announced [yesterday], will lead to a yearlong collaboration aimed at studying and implementing tests and policies for self-driving cars. That includes putting autonomous vehicles on the streets of Boston soon, the city said.