Summary

Mahlon Pitney Atlantic Coast Line Railroad Company v…

We must therefore treat the ordinances as legislation enacted by virtue of the lawmaking power of the state. They are manifestly an exertion of the police power, and the question is whether, viewed in that light, they run counter to the 'contract' or 'due process' clauses.
That a railroad charter may embody a contract, within the meaning of the Constitution, hardly needs to be stated.
Source: Wikisource

Mahlon Pitney Atlantic Coast Line Railroad Company v…

As to filling in between the rails, elsewhere than at the crossing streets, we have to do not merely with the necessities of drainage, but with the safety of persons crossing the railroad tracks midway of the respective street blocks. The power of the state to prescribe precautions with respect to the running of railroad trains so as to guard against injuries to the persons or property of others is not confined to the establishment of such precautions at highway crossings.
Source: Wikisource

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