There's nothing to disagree with here but.....
This is a student seeking input on the design of a product for a final year project.
The biggest advance in road safety (for all) will come from a change in attitude (from all) and that's probably beyond the wit of a single disciplined final year student (no offence to the OP).
Surely designing something that will inevitably be of doubtful efficacy and that has already been thought of is ... well, useless.
Now, designing something useless when one is designing something ornamental or even partially ornamental, is one thing - there is little and sometimes no 'use', in a purely functional sense, in a
great many items we are happy to spend our money on, as evinced at the massive exhibition I have just attended with great pleasure and enthusiasm! - but designing something with the specific purpose of
enhancing safety is a very different matter and requires a very different approach indeed.
If the OP
has to design something to improve the safety of cyclists, that is to be used
by a cyclist, he or she might well seek to improve somewhat on some sort of gadget that is already in existence but which does not operate as well as it might, especially in the adverse conditions we often find ourselves in without prior warning here in the UK.
For IF a
safety device is to be 'a new design' it will - or at least should be - of necessity be a very different design process to that used when designing almost any other item, as
very different priorities will need to be taken into account.
Personally, I think the greatest risk to cyclists will be the rapid growth in silent electric vehicles. An early warning system for those could be very helpful.
I agree - but want to point out that the silent approach of electric vehicles is a risk to
many road users, not just cyclists, and - sadly - I suspect strongly that a 'detection/early warning gizmo' would entail the fitting of the gizmo's counterpart to all e-vehicles - it couldn't merely be a stand-alone 'thingie' the vulnerable road user can carry. So we're back to the 'changes in the cars and/or drivers' thing once again ...