For most drivers, after reaching the age of 60, the interval between examinations is reduced to three years. If the previous examination was conducted shortly before turning 60, the date of the next one is set to ensure that the legally required frequency is maintained after the age of 60. Drivers in categories AM, A1, A, B1, B, and BE undergo medical examinations every 10 years until the age of 60, and every three years thereafter. For drivers of agricultural machinery, a separate procedure applies: after 60, examinations are conducted every five years, and after 65, every three years. Drivers in categories C1, C, D1, D, C1E, CE, D1E, and DE, as well as tram and trolleybus drivers, undergo examinations every five years until the age of 60, and every three years thereafter. For example, if a driver in categories A and B underwent a medical examination at the age of 56, the next one will be required at 63. If the examination was conducted at 64, the next will be at 67. For a driver in categories B and C who underwent an examination at 59, the next examination is scheduled for 63. Thus, for most drivers, the age of 60 becomes a threshold after which mandatory medical examinations must be conducted significantly more frequently.