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![Traffic paint undergoes rigid tests. Washington, D.C., April 16. At the U.S. Bureau of Standards, J.E. Keefauver of the Bureau has been running tests on the paint that is placed on safety zones and streets to determine which has the best wearing activity. The discs [?] are painted with the traffic paint the chain-driven wheel of eraser rubber (to imitate an auto tire) slowly wears the paint away. The brushes are to keep the disc and tire clean. These tests were made at the requests of the traffic bureaus, 4/16/1937](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MzcvMDEvMDEvdHJhZmZpYy1wYWludC11bmRlcmdvZXMtcmlnaWQtdGVzdHMtd2FzaGluZ3Rvbi1kYy1hcHJpbC0xNi1hdC10aGUtdXMtYnVyZWF1LTEwMjQuanBn/40/50/webp "Traffic paint undergoes rigid tests. Washington, D.C., April 16. At the U.S. Bureau of Standards, J.E. Keefauver of the Bureau has been running tests on the paint that is placed on safety zones and streets to determine which has the best wearing activity. The discs [?] are painted with the traffic paint the chain-driven wheel of eraser rubber (to imitate an auto tire) slowly wears the paint away. The brushes are to keep the disc and tire clean. These tests were made at the requests of the traffic bureaus, 4/16/1937")