<em>If you see a police car behind you with its lights on, you should: </em>
<u><em>drive to the right as soon as it is safe and stop. </em></u>
Explanation:
Just like with any emergency vehicle, you want to try to get out of their way as soon as possible, so you always need to be prepared and take the right precautions.
That is, the US Supreme Court established that state governments can regulate private industries that affect the "common good" since grain storage facilities were dedicated to public use, therefore , their rates were subject to public regulation.