I am both an avid mountain biker & drive tractor trailer in the city. Expansion of bike lanes will not increase safety. The main thing that will increase safety is cyclists themselves. I watch riders buzz down Mass Ave, earbuds in, seemingly no regard for the environment for which they’re riding in. I used to hammer my bike around town like I was Kevin Bacon in quicksilver, not anymore. It’s the rail trails for me. If you want to increase rider safety you should look at educating riders to create a 360 circle of awareness while riding. As a truck driver, driver trainer & biker I’d be more than happy to share my knowledge about how to keep riders safer & hopefully save lives.