10 1 max min uniformity parking uncovered zone 3 urban 1 5 0 75 3 0 8 0 4 1 6 parking uncovered zone 2 suburban 1 0 5 2 0 6 0 3 1 2 gas station canopy 12 5 10 15 safety building exterior 1 0 5 2 for security issues raise avg to 3 industrial manufacturing. In the latest version of this document rp 20 14 the light levels recommended for parking lots were significantly higher than those mentioned in the previous version rp 20 98 presenting potential energy savings. Light plus specialized supplementary lighting k or not less than 1 5 the level in adjacent areas ies footcandle recommendations.