Yes, some Sri Lankan monks do ride motorcycles. While it is more common for monks to rely on traditional modes of transportation such as walking or using public transportation, some monks may choose to ride motorcycles for various reasons. Motorcycles can provide a faster and more convenient means of travel, especially in areas where public transportation is limited. However, it's important to note that the decision to ride a motorcycle may vary among individual monks based on personal preferences, the rules and guidelines of their particular monastic order, and the specific circumstances of their daily lives.