MassDOT launches 6-month study of area’s worst traffic – and ways to help ease it

State transportation officials have launched a new study to pinpoint the Boston area’s worst traffic and figure out how to unjam it — with city and business leaders calling it an urgent priority that has to be addressed before it drives companies and residents away.

“For us as a chamber, it’s probably our No. 1 policy priority,” said Carolyn Ryan, senior vice president of policy and research for the Greater Boston Chamber of Commerce. “People are not going to enjoy living in Boston if it keeps being like this.”