Assuming that a driver with a visual acuity of 20/20 can read a road sign within his area of vision at a distance of 50 ft for each inch of letter height, prepare a table with required letter heights for signs 100 ft, 500 ft, and 1000 ft for drivers with

For Civil Engineering onlyAssuming that a driver with a visual acuity of 20/20 can read a road sign within his area of vision at a distance of 50 ft for each inch of letter height, prepare a table with required letter heights for signs 100 ft, 500 ft, and 1000 ft for drivers with acuities of 20/20, 20/40, and 20/70.