UCI CYCLING REGULATIONS  If the start time is recorded using an electronic strip, the distance between the point of  contact of the front tyre with the ground and the electronic strip must be 10 cm.  (N) The start shall be taken from a starting ramp.  (text modified on 1.09.00; 1.01.04).  (text modified on 1.09.00; 1.01.05).  (text modified on 1.09.00; 1.01.04).  (text modified on 1.09.00; 1.01.04).  (text modified on 1.09.00; 1.01.04; 1.01.17).  2.4.020 Riders may not help one another.  2.4.019 If necessary, the commissaire shall force the riders to leave the 2 metre 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).  2.4.018 A rider, upon catching up with another shall leave a lateral gap of at least 2 metres  between himself and the other rider.  After 1 km, the rider caught up shall ride at least 25 m away from the other.  2.4.017 If one rider is caught up by another, he may neither lead nor follow in the slipstream of  the rider who caught up.  Racing procedure  2.4.015 Finishing times shall be taken to the nearest one-tenth of a second at least.  2.4.016 For UCI WorldTour events, world championships and Olympic Games times shall be  taken and communicated to the nearest one-hundredth of a second. 2.4.014 (N) Timekeeping shall be conducted at several points along the distance, so distributed  as to ensure that riders and spectators alike be continually informed of the progress of  the race.  2.4.013 The start may be determined by the front tyre making contact with an electronic timing  strip on the start line. If the rider starts fractionally before the countdown reaches 0 or in  the following 5 seconds the time it is triggered is used. If the rider starts after this 5  second delay has elapsed or in the event of problems with the electronic timing, the  rider's time shall be counted as from the start of manual timing following the countdown.  2.4.012 The rider shall start his ride under the orders of the timekeeper-commissaire who shall  count down to the starting time, following which the timing of the ride shall start. The time  of any rider who reports late to the start shall be calculated from that rider's scheduled  starting time.  Timekeeping  E170421  ROAD RACES  51 