Is that an assigned table design or are you able to make your own changes?
I ask because it is need of some normalization...
you have repeating data in the days column.
you have dependent data (the dayplate is derived from the days).
it would be better to store 2 time columns (start and end) instead of the timeplate to make it easier to determine, say, "show streets where there is a restriction at 8:30am." ie WHERE 08:30 BETWEEN start AND end