UCI CYCLING REGULATIONS  In mixed relay events, the commissaire will decide which team will ride at least 25 m  away from the other based on their position after 1 kilometre.  (text modified on 1.01.19).  2.5.017 If necessary, the commissaire shall force the riders to leave the 2 metres lateral gap and  the distance of 25 metres respectively, without prejudice to the penalties provided for in  the scale of penalties (article 2.12.007).  2.5.018 Riders, even of the same team, may not push one another.  2.5.019 The exchange of food, drinks, small items of equipment, wheels and bicycles and help  with running repairs shall be permitted between riders of the same team.  2.5.020 The specific regulations for the event shall indicate if feeding is permitted and which  conditions apply.  2.5.021 The following vehicle shall follow at least 10 metres behind the last rider of the team,  shall never overtake it nor draw up level with it. In the case of a breakdown, technical  support may be rendered only with the rider and vehicle stationary.  2.5.022 The vehicle may not take up position between the team and any rider(s) that has/have  dropped behind unless they are at least 50 metres apart. The riders that have dropped  behind may under no circumstances ride in the slipstream of a vehicle.  2.5.023 The following vehicle of a team that is about to be caught up shall, as soon as the  distance between the two teams drops below 100 metres, drop back behind the vehicle  of the other team.  2.5.024 A vehicle following a team that catches up another may not take up position between the  teams unless there are at least 60 metres between them. Should that gap subsequently  reduce, the vehicle shall return to its position behind the last rider of the 2$^{nd}$ team.  2.5.025 The following vehicle may carry equipment necessary for changing wheels or cycles.  2.5.026 If technical support via motorcycle is permitted, the motorcycle may carry only spare  wheels.  2.5.027 Megaphones or loud-hailers may be used.  2.5.028 [article abrogated on 1.01.21]. No equipment for the riders may be prepared or held ready outside the following vehicle.  Persons riding in vehicles shall not reach or lean out.  Following vehicles  E170421  ROAD RACES  56 