proper lookout

noun
proper look·​out

Legal Definition of proper lookout

: the due degree of vigilance expected of the operator of a vehicle or train in avoiding collisions with vehicles or pedestrians

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“Proper lookout.” Merriam-Webster.com Legal Dictionary, Merriam-Webster, https://www.merriam-webster.com/legal/proper%20lookout. Accessed 16 Jan. 2021.

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