> The vertical separation seems much larger than necessary to accommodate the tallest trucks allowed on the highway. The vertical height of things we want to s

> The vertical separation seems much larger than necessary to accommodate the tallest trucks allowed on the highway. The vertical height of things we want to send down the highway are also sometimes larger than the tallest trucks on the highway. https://bloximages.newyork1.vip.townnews.com/news-journal.com/content/tncms/assets/v3/editorial/1/ba/1ba95baa-9900-5a1c-8142-015ed574ae92/5a8ffc1f0cdcc.image.jpg https://bloximages.newyork1.vip.townnews.com/news-journal.co...