Uthayan Thurairajah. An Elite Roadway Illuminance Calculation (ERIC) Method Provides Optimum Performance and Cost-saving without Compromising Safety. RPST-V8 [Internet]. 2023 Mar. 27 [cited 2026 Jun. 9];:98-119. Available from: https://stm.bookpi.org/RPST-V8/article/view/10063