Deaths related to cycling accidents have declined 14.7 percent since the road traffic law was revised a year ago, the National Police Agency said Thursday.

During the one-year period through May, 517 cyclists died in accidents, down 89 from a year earlier, as the number of accidents involving bicycles fell 13.1 percent to 93,484.

An NPA official credited the drop to the revision, which took effect in June 2015. The law now designates 14 cycling traffic violations, including drunken riding and riding without brakes, as particularly dangerous and requires violators to take three-hour safety lectures if they break any of the 14 rules twice in three years. The violations also include the running of red lights and stop signs.

A total of 24 people have taken the lecture since the revision took effect, the NPA said.

Cycling accidents involving pedestrians fell 5.4 percent to 2,417 over the period, while those involving vehicles dropped 13.3 percent to 83,860.