One of the problems with ANY motorised vehicle is that it has blind spots. They are an unfortunate consequence of putting roofs and windows or freight and people in them. My mark5 golf could nearly disappear a swb transit off the rear quarter at one particular angle, only for a second but its long enough.
Even with a glassy car (big estate) a cyclist can all but vanish for a second or two at a time. Classic example would be just left of the car by the c pillar. Factor in the pillars and headrests.
Getting round this requires two things. 1 – Regular vigilance by the driver to know the bike WAS there and to keep looking for it until it reappears. 2 – the cyclist to give some thought to their approach angle, where they stop and what the driver can most likely see.
If you are on the road you have a duty to take the same care you expect of others for your own safety.
I spend lots of time talking to my son (4) about making himself visible. Showing him him what can and cant be seen from a car or a van. I pray that this sets him up well for when he goes independent. Having seen the road sense of other kids round here i cannot believe many parents invest in this. In fact I doubt many of them have tas much road sense as him based on the south’s roads.