The other advantage that LEDs have is that it&#x27;s really easy to do efficient fixtures with full-cutoff (no direct uplight), since LEDs are a directional light source.<p>You can get that with HID sources too, but it means wrapping the whole thing in a reflector and having a flat lens on that bottom that doesn&#x27;t drop below the housing: <a href="http:&#x2F;&#x2F;www.galleryoflights.org&#x2F;mb&#x2F;gallery&#x2F;albums&#x2F;userpics&#x2F;IMG_4931~0.JPG" rel="nofollow">http:&#x2F;&#x2F;www.galleryoflights.org&#x2F;mb&#x2F;gallery&#x2F;albums&#x2F;userpics&#x2F;IM...</a><p>It&#x27;s really the decorative pedestrian-scale street lights where cutoff is a problem. People like their friendly&#x2F;traditional looking lanterns and glowing spheres.