The only time (as far as I know) when the terminus loop in Purvciems was used by buses.
On 20th January 2018 a KHL open-air hokey game (betweem Dinamo Riga and Dinamo Minsk) was held in a nearby schools sport field. Extra buses and trolleybuses were assigned to transport spectators to and from the game. All buses and trolleybuses in this photo are waiting the game to end and resume service to transport spectators away from the field.