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A couple of left-field ideas that I've mused on for rear lights:
The best way to allow drivers to judge closing speed is to have two or more distinct light sources, since these will visually diverge as you close. I think you can already get a light bar, but it might be an idea worth tinkering with to improve. For example a lightweight horizontal beam with a light at each end.
Secondly aircraft carriers have an system of lights that indicate to pilots their angle relative to the desired glides path. I wondered whether a similar thing could be designed for a bike to show extra lights to drivers if they are too close or change the display when they are passing with enough clearance.
No idea about the feasibility of these. Just idle speculation.
There has been a collaboration between the Ruislip Woods National Nature Reserve Management Advisory Group and Brunel University for some 2 1/2 years, principally with their Centre for Flood Risk & Resilience.
They have helped us improve the array of natural flood management that we have installed in Park Wood SSSI, to reduce the flood risk for some 80 residential properties between the woodland and the River Pinn.
On Wednesday the 11th of December I gratefully accepted an inviation to attend the Brunel Design School Industry Review event where some 60 students presented posters of their final year projects.
Muayed is proposing to design a better bike light, to reduce the risk of cycling.
I'm certain the hive mind here can offer him some suggestions based upon experience,
not just of cycling at night,
but also the demerits of those bike lights already commercially available.