Question: Assuming that a driver from Oregon with a visual acuity of 2 0 / 2 0 can read a road sign within his area of

Assuming that a driver from Oregon 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 known to have the following acuities, 20/20,20/40 and 20/70.

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