The public lighting(CLASSIC) is not actually meant to illuminate the road ahead of the car, as the lights can do so. But public lighting does illuminate adjacent areas, alerting drivers to possible dangers.
Pole height is very important in terms of light distribution, so transportation engineers often want to install the lights on higher speed roads.
For a safe driver, the lights must be relatively constant. We know that our eyes adjust to the sun faster than going into the dark. For a while, when we entered a dark room, our vision was impaired. Therefore, driving from a well-lit area to a dark area produces a similar effect. Therefore, ideally, if an area must be illuminated, the globe is mounted on a relatively high pole so that the light remains constant and the eye does not continuously adjust to achieve different brightness.
For pedestrians, the goal is usually to illuminate the sidewalk itself. Additional black spots along the sidewalk can be created by a variety of conditions, including trees, large bushes, strange angles of the street, parking patterns, tall church spires or other buildings allowed by residential areas, or many other potential effects.
Keep in mind that as cycling becomes more popular, you need to monitor the presence of public lighting on these new bike lanes and trails.