Sorry to hear this, and condolences to Bob’s friends and family.
I lost my sister last December, killed while cycling by a reckless driver. It made me question whether cycling is a good idea on roads. After this i could not get on a bike for 2 months. It’s natural to think this way, i had to allow myself to grieve.
But don’t give up cycling. Bob loved cycling, he knew the risks and lived his life that way. The best tribute the rest of us can give is to keep riding
RIP