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Experiments with a divided highway crossing sign to reduce wrong-way driving. Progress report No. 1.
Published:
| Vaswani, N.K.
Published:
| Goldschmidt, J.
Published:
| -
Published:
| Vaswani, N.H.
Published:
| Parsons, A.W.
Published:
| Oppe, S.
Published:
| Willette, R.E. (ed.)
Published:
| Boethius, G. & Westerholm, B.
Published:
| Waller, P.F. & Griffin, L.I.