<p>Also at night the RPD (Rice Police Dept.) barricades or blocks off most of the entrances into the campus. Not the main entrance of course, but the ones near the colleges that are open during the day. </p>
<p>I do not know the exact times but I think weekdays around midnight. Then they are opened back up around 5:30 - 6:00 am to allow the early morning services like garbage collection and food service deliveries, etc. </p>
<p>I had to call RPD last semester to make sure a cab could get into one of the college entrances area to pick up a student for a early morning airline departure. Fortunately in this case it worked out that the cab arrived shortly after the barricades were removed but I was a bit worried that if the cab went early he would find that he could not get into the arranged pick up location near the college.</p>