This Vulnerable Road Users Law is a step in the right direction to ensuring that cyclist safety. However as an avid cyclist living in a colonial era city, the roads are just too narrow to make this regulation enforceable. Cars pay road tax and can operate within the marked lanes of a road, at legal speeds. When cyclists clog the road by either riding down the middle of a motor vehicle lane or ride 2-3 abreast, this obstructs the flow of traffic. Sure, there is an opportunity to pass every quarter mile or so, but during commuting times this situation becomes untenable. Even with a polite quick toot of the horn, many cyclists resort to the middle finger salute more often than Mass Bike would estimate and continue on their merry way down the center of the road. The regulation doesn’t address this obstinate behavior and more training of cyclist must occur as share the road means that all operators of motorized and human motorized vehicles must obey ALL the regulations. The middle finger salute is unacceptable and will absolutely cause unnecessary confrontations. Mass Bike must require cyclists to take the League of American Bicyclists safety course to ensure that safe operation on our public streets applies to ALL who use them. A law that only protects cyclists doesn’t account for the hundreds of scofflaw cyclists I encounter monthly whether driving a car or riding a bike. Please consider this comment carefully as one-sided legislation doesn’t last long on the books and a push for a set of regulations to license, insure, test and even tax cyclists (road use tax) is not all that far away.