Hi. I am sure I am not alone in being very confused when looking at lights. Watts, lumens, Lux etc etc. So who has say a table so these can all make sense. I went Hanford to have a look and they had lights at 2.5lux as suitable for unite roads. As far as my understanding goes 1 Lux is 1000lumens per square meter. But how useful this amount of light is I know not! Any experience or understable info would good. Just to add to the confusion price seems to bear no relevance either.