With respect to vehicle classification, how is a truck defined?
A. Eric High stated that a truck is defined as a commercial vehicle that is non-passenger. Therefore, SUVs and pick-up trucks are not defined as trucks. Q. Jeff Stroehmann asked what drives the decision to have an interchange and to locate an interchange at a particular location. A. Eric High responded that PENNDOT examines a number of variables during the project planning process. These include examination of: – Existing secondary roadways that carry substantial traffic – Future conditions where is additional access needed? – The need for an interchange with limited access versus providing additional secondary roadways that would accomplish the same thing. These are both reviewed and the impacts compared. – Spacing. Interchanges should not be located less than one mile apart in urban areas and two miles apart in rural areas. (F.Y.I. AASHTO requires three miles in rural areas for Interstates.) Eric High then elaborated on how planning around interchanges occurs. He noted the importance
