Rules and Classes


Class A ~ Pre unit 4 stroke                            Class E – 2 stroke pre  Dec31st 1956                    

Class B – Rigid 4 stroke.                                Class F -2stroke up to 1970 (British made)

Class C – Unit construction over 301cc.       Class G- Early twin shock

Class D – Unit construction up to 300cc 

Twin-shocks must be fitted with drum brakes and standard shock absorbers. No air-cooled mono shocks.

General rules


A machine will be deemed to be in the section when the front wheel has passed the Section Begins card and marks will be awarded until the back wheel has passed the Section Ends card. 0, 1, 2, 3 and 5 system of penalty marks will be used.

Marks are awarded as follows:
5 Fails to complete the section
Machine moved backwards to gain better position
Engine stops with rider or any part of the machine (except the tyres) touching the ground.
Rider dismounts from the machine (both feet on the ground on the same side or behind the machine)
Machines crosses boundary tape or dislodges marker (wheels may not be lifted over markers or tape
Machine or rider receives outside assistance
Requested by rider rather than attempt the section
A rider, or person having an interest in the rider’s performance, who in any way alters the severity of the section without the authority of an official
Travelling in a forward direction against the direction of the section;
3 Footing more than twice
2 Footing twice
1 Footing once
0 Completing the section un-penalised.
Footing will have occurred if any part of the rider’s body touches the ground or the rider benefits from any part of his body leaning on an obstacle (tree, wall, rock, etc.) without stopping the progress of the machine. Footing outside the section does not class as failure but is simply classed as footing.
The machine may also move back slightly as the rider regains momentum.
No penalty for TOUCHING tape or Section Cards.
SIDECAR MARKING. The same as for solos but if the passenger foots or dismounts = 5. A competitor will be deemed to be in an observed section from the time the front wheel reaches the section begins card, until the machine has cleared the ends card.
NOTE! Clubs may adopt their own marking rules, any changes should be stated on the entry sheet or the signing on sheets.


Riders must complete each lap once before attempting any section for 2nd time and so on for each lap. Sections may be altered after any particular lap so the above system must be followed. It is recommended that riders start in batches at different sections rather than all queue up at the 1st section.

EXAMPLE – Riders with No’s 1, 11, 21, 31 start at No 1 section while riders with 10, 20, 30 start at No 10 section. Number of laps left to the discretion of the organising club.


A baulk is deemed to occur when a rider, is prevented from making an attempt to ride a section due to outside obstruction. Should a rider claim a baulk, the Observer may, at their discretion, allow a re-run of the section.


Please remember the observers are human and treat them with respect and don’t take longer to complete sections than necessary, don’t argue regarding marks etc. Remember, without observers it would be difficult to run trials.


Clothing must cover legs and body, it is recommended that arms should also be covered. Boots of knee length must be worn. Only safety type wellington boots made of leather, rubber or plastic will be allowed. The wearing of gloves is recommended. Motorcycle helmets, which are correctly fitted, must be worn by all officials, riders and passengers when riding a machine, unless specified otherwise in the Supplementary Regulations. Youth: All youth competitors must have clothing covering arms and wear gloves covering hands and fingers.


The boundaries of a section may be tape or markers, which should be set out on either side of the section and the boundary is an imaginary straight line between each marker. The machine must stay within these marked boundaries. Any touches or dabs in or outside these boundaries whilst the machine is in the section will count. Any rider who deliberately leans on an object with any part of the body will also be penalised with loss of marks. (i.e. leaning on a tree). All dangerous objects, metal or glass which could cause injuries to riders MUST be removed. Overhanging tree branches should only be removed with permission of the observer and/or organiser.


The course will be marked as stated in the Supplementary Regulations.
It is recommended that the principle route be marked: – Blue – Left, Red – Right with diversions for other classes in additional colours. It is the rider’s responsibility to follow the correct route. The organisers reserve the right to modify the route.
EXPERTS who ride the harder route, red markers on the right hand side of the section and blue markers on the left hand side.

50/50 Sections will be shown by a marker board at the start of the section.

CLUBMAN – white markers on the right hand side of the section and yellow markers on the left hand side.


The limits of an Observed Section or sub-section will be defined by artificial boundaries, i.e. markers or tapes, firmly placed and positioned to clearly define the limits of the section, if tapes are used they should be clear of the ground but not exceed a height of 500mm from the ground. The Start and Finish of each Observed Section will be identified by Section Begins and Section Ends signs. Sections will be numbered in sequence unless otherwise stated by the organisers.

Link to the AMCA Trials rules .