In a large bowl, place the grated vegetables and the scallions. Stir together.
In a small bowl, mix together the lemon juice, lime juice, maple syrup, olive oil, and salt.
Pour most of the dressing over the vegetables in the large bowl. Stir together, then taste it and see if you need the rest of the dressing. Refrigerate for at least an hour to let the flavors mingle. Serve cold or at room temperature.