• Posts
  • RSS
  • ◂◂RSS
  • Contact

  • Adaptive Windshield Tinting

    June 1st, 2010
    ideas, tech, transport  [html]
    Driving at night can be annoying because the range of light intensities is huge. Driving along a dark road you want your eyes adapted to the dark, then along comes a car with bright headlights and you lose your night vision. The rearview mirror also has this issue: it tends to be full of bright headlights, but if you switch it to "night mode" then it is so dark you can't see anything but the headlights. I think something that could darken the brightest stuff while leaving less bright things alone would really help night driving.

    One solution I think would be some kind of adaptive windshield tinting. A fast responding photosensitive darkening chemical, sensitive only in one direction, would allow the windshield to limit bright lights aimed at the driver's eyes without much affecting portions of the field of view that were not actually bright. The idea is that at every spot on the windshield there is a direction from which bright light would hit the driver's eyes, so each spot blocks light only when there's excessive light from that single direction. It would look pretty weird from the passenger's seat, but I think the driver is far enough from the windshield that even different driver heights and seat to wheel distances wouldn't make it too innacurate.

    I suspect rapidly darkening and lighting in response to varying light levels is possible, but requiring the sensitivity to be only to a specific direction might be impossible or way too expensive.

    Comment via: facebook

    Recent posts on blogs I like:

    Best Practices Civil Service

    I propose that transportation agencies hire people whose job is to keep abreast of global developments in the field and report on best practices. Which agencies should do it? Ideally, all urban ones. Very small ones should piggyback on large ones, or part…

    via Pedestrian Observations June 14, 2021

    Collections: The Queen’s Latin or Who Were the Romans? Part I: Beginnings and Legends

    Who were the Romans? How did they understand themselves as a people and ‘Roman’ as an identity? And what were the implications of that understanding – and perhaps more importantly the underlying reality – for Roman society and the success of the Roman Emp…

    via A Collection of Unmitigated Pedantry June 11, 2021

    It's ok to feed stray cats

    Before we had kids, Jeff and I fostered a couple of cats. One had feline AIDS and was very skinny. Despite our frugal grocery budget of the time, I put olive oil on her food, determined to get her healthier. I knew that stray cats were not a top global pr…

    via Giving Gladly May 15, 2021

    more     (via openring)


  • Posts
  • RSS
  • ◂◂RSS
  • Contact