Times when staff didn't follow best practices or local policies for new infra

[danbrotherston]

Some crosswalks (Jubilee, King St E at Cameron) do have flashing white lights. The IHT does have lights.

What's the issue with our LED street lights' colour or brightness?

Is IHT lite all the way now? Last time it had little lighting.

I find with the LED street lights, it doesn't light up the area as well, and it's harder to see pedestrians. Remember that LED lights are narrow spectrum bulbs, which gives them the ability to cast more lumens per watt. However, if they're not bright enough, you really can't see anything.

Not all of it, the section through the park has lighting, to the north, I think they were working on it, but I haven't seen it in the dark in a while to know if it's on.  The section to the south as nothing yet AFAIK.

LEDs themselves of course emit a specific wavelength (blue) but in modern white LED lamps, the blue light is passed through a phosphor to adjust the spectrum to white, and the resulting light is very broad spectrum, far better than low pressure sodium lights (which we didn't use, but are common in some places) and certainly not worse than high pressure sodium lights (which we did use before).  They are a higher colour temperature which does affect one's perception of brightness.

However, the biggest impact is most likely the more advanced beam shaping possible with modern LED luminaires, specifically they are able to focus more of their light on the target area (the road), with less spread. This is good in some ways, there is less light spilling, and less lighting is required to light a street, however, it does mean that pedestrian areas are sometimes not lit as well, depending on how the lighting is actually positioned. This is definitely a problem, there is insufficient consideration given to lighting pedestrian areas by our engineers, and they usually got away with it before due to the substantial light spillage....no longer.