Boston July 4, 2023 5:08 pm Delays after 2 separate tractor-trailer crashes on I-93 in Boston Two separate crashes involving tractor trailers led to traffic delays in Boston on Tuesday morning. US & World Videos 21:59 Anna celebrates National Cheese Month with great recipes for summer 2:48 Key witnesses take the stand in Karen Read trial 1:59 Highly anticipated witness in Karen Read trial to take stand 4:04 Student violence impacts schools across Mass. 0:44 Deaths of 2 swans in apparent shooting under investigation