Final answer:
Railroad crossing pavement markings include a yellow circular sign with a black 'RxR' symbol and white crossbucks with 'RAILROAD CROSSING' written on them.
Step-by-step explanation:
Railroad Crossing Pavement Markings
The pavement markings that warn of a railroad crossing typically include a yellow circular sign with a black 'RxR' symbol. This sign is often accompanied by diagonal striping painted on the pavement, known as crossbucks. The crossbucks are white with black letters that spell out 'RAILROAD CROSSING.'
These markings are essential in alerting drivers and pedestrians to the presence of a railroad crossing, reminding them to exercise caution and be prepared to stop if a train is approaching.