The pronunciation of Trapelo Road is controversial. It was originally named by the fur trappers in the area, because they would set a trap below, near the Beaver Brook, and pronounced like those two words run together. Reportedly, the pronunciation changed when non-local traffic broadcasters guessed at how to say its exit from I-95. Many people now put the accent on the second syllable. If the name came from the Italian, and it was spelled "Trapello", that might make sense. The longest road in Waltham, it enters from Lincoln at the north-west border, and exits to the east where it joins Waverley Oaks Road, and then enters Belmont. Along the way, it intersects I-95, Lexington Street, and Forest Street.
Map of major streets and roads