What pavement markings are typically painted at the approach to some railroad crossings?

Pavement markings painted at the approach to some railroad crossings typically display an "X" symbol followed by "RR," which stands for "railroad." This marking serves as a warning to drivers that they are approaching a railroad crossing and should be prepared to stop for trains. It is crucial for safety, as it alerts motorists to the potential presence of train tracks ahead and the need to be vigilant for any trains that may be crossing the roadway.

The "X RR" marking is commonly accompanied by other signs and signals at railroad crossings, enhancing driver awareness of the need to exercise caution. This type of marking is standardized and is part of the traffic control devices that promote road safety near such crossings.