When bicycles are on the road they are supposed to be treated the same as automobiles. But cyclists have a duty to allow other vehicles to pass them as easily as possible. The Massachusetts legislature passed a bill that specifically addressed these issues in 2008 to better protect cyclists, and to make cyclists protect themselves by following the rules of the road.
It's not clear if these rules were being followed when the driver of an 18-wheeler struck and killed a bicyclist in Wellesley on Aug. 24. Investigators are searching for witnesses, many of whom have been identified by traffic cameras, according to the Boston Globe.
If the cyclist's relatives sue the driver and trucking company (if they are different), then they will also need to hear from these witnesses for a wrongful death lawsuit to succeed.