Occupants of vehicles shall, in all circumstances, comply with the instructions given by the commissaires who shall, in turn, do their utmost to facilitate the manoeuvres of the vehicles. 

2.3.020 Any driver wishing to overtake a commissaires’ vehicle on his own initiative shall draw level with those vehicles, state his intention and proceed only once granted official permission by the commissaire. He shall then complete his business as expeditiously as possible and return without delay to his place in line. 

Only one vehicle at a time shall be allowed to penetrate the bunch regardless of the size of the bunch. 

2.3.021 If a group of riders breaks away from the bunch, their follower vehicles may not slip in between the break-away riders and the following group without the authorisation of the commissaire, if and for as long as he considers the gap sufficient. 

2.3.022 No vehicle may overtake the riders in the last 10 kilometres. 

2.3.023 During world championships, only the vehicles mentioned below shall be authorised to drive in the race: 

1. the car of the president of the commissaires panel; 

2. the second commissaire’s car; 

3. the third commissaire’s car; 

4. the fourth commissaire’s car; 

5. six UCI cars; 

6. the doctor’s car; 

7. two ambulances; 

8. the police car, if necessary; 

9. the nations’ cars plus four cars and one motorcycle providing neutral support; 

10. a maximum of three camera motor-cycles and one sound motor cycle; 

11. the two commissaire’s motorcycles; 

12. the two photographers’ motorcycles; 

13. the regulator(s)’ motorcycle(s); 

14. the two information motorcycles; 

15. the doctor’s motorcycle; 

16. the time board motorcycle; 

17. the police motor-cycles; 

18. the broom wagon; 

During Olympic Games, only the vehicles mentioned below shall be authorised to drive in the race: 

1. the car of the president of the commissaires panel 

2. the second commissaire’s car 

3. the third commissaire’s car 

4. the fourth commissaire’s car 

5. the organizing committee manager’s car 

6. the UCI technical delegate’s car 

7. the doctor's car 

8. two ambulances 

9. the police car 

10. the nations’ cars, plus four neutral support cars and one neutral support motor- cycle 

11. a maximum of three camera motor-cycles and one sound motor cycle 

