One of the RECON site requirements at the Vogtle Unit 3&4 jobsite is that all moving vehicles and equipment have flashing strobe lights. While all RECON jobsites require personnel to wear safety/reflective vests, not all currently require the flashing beacons on equipment. While a bright flashing beacon can even be seen during the day, the combination of the flashing beacon and reflective vests during dark or twilight hours has a tremendous effect. The reflective tape on our safety vests really "pop" when they are around a flashing beacon. It greatly improves the operator's ability to spot pedestrians in marginal or poor light. The reflective tape can also be added to stationary hazards and moving equipment - providing a similar "pop" to highlight the hazards. If working in anything but the best of light, it is recommended that other jobsite implement the use of the flashing beacons.