Yes, buses and guaguas in the Dominican Republic are generally safe for travelers. The buses are modern, comfortable, and air-conditioned, offering a convenient and affordable mode of transportation. Guaguas are public minibusses that are widely used by locals and tourists alike. While they can get crowded, they are a popular and budget-friendly option for traveling short distances. As with any mode of public transportation, it's advisable to keep an eye on your belongings and take necessary precautions.