The IES RP-8-00 specs which the LED streetlights are trying to meet are (1)TYPE II, (2)MEDIUM and (3)CUTOFF or (3)SEMI-CUTOFF at the existing Local/Low pole spacing, which most of the LED street-lights fail to meet simultaneously. •You will therefore need to add an extra row of staggered LED streetlights on the other side of the street . •You will need twice as many LED streetlights to replace the existing HPS streetlights.