Clastres | Friday 29 May 2020 – NTT

Static test – A noise meter is placed at a 45 degree angle to the exhaust outlet and 50cm away. The car is then held at 3/4 of its maximum rev limit and the highest reading recorded is the cars recorded noise output for the day. A static limit of 105db is very high and very few cars have an issue with this. At 98db cars with a cat, std factory manifolds and exhausts will generally be ok. Anyone with a very loud exhaust/manifold should be careful.

Drive by – This test is recorded at track side as the car is moving at track speed. Depending on the circuit the reading will be taken between right next to the track and up to 20 meters away. Cars with forced induction tend to have more issues with drive by, even though they tend to pass static tests as the s/c or turbo’s only kick in when run at speed. There are many things that affect drive by readings from wind direction, air temperature, how low the cloud cover is or even what line you are driving.

A sessioned event means that the day will be structured into usually 3 separate groups which take it in turns to go out on track for a set time, normally 20 minutes. Each car will be restricted to their group for the duration of the day. Drivers are generally allocated a group depending on their experience level or type of car.

An Open Pit Lane event means that cars are free to go out onto the track when they choose (providing the circuit limit or our normally reduced limit has not been reached).

All levels: Everyone

Beginner: 1st ever track day

Novice: 2-5 track days

Intermediate: 5+ track days including a major circuit

Advanced: Driven on a number of open pit lane track days at a range of circuits including at least two major race circuits

Second drivers: Beginners will only be accepted at non-race circuits. More info.

Bookings from 1/9/2026: Second drivers will only be accepted if they fall into the Intermediate or Advanced categories - proof of experience will be required.

Clothing must fully cover arms & legs.

Crash helmets must be in good condition and suitable for circuit driving in a car. (Convertible/flip-up helmets are not permitted)

ANY vehicle without a hard top or fixed roof will require occupants to wear full face helmets.

Alcohol must not be consumed, including at lunch time.

2 seater sports cars only - for a full list of accepted vehicles please click here.

All drivers must be 21 - 75 years old (2nd drivers 21 - 70).

Passengers:

LoT club members may have up to 3 passengers free of charge. These passengers must register in advance of the day using the on-line registration form.

Those not registering in advance, additional passengers, or those with non-members will be charged £10/10€ each. We will not sign on more than 5 passengers per car without prior written approval (24hrs before the event).

Passengers must be 18-75 years old, no exceptions.

All drivers and passengers please see FAQ for other requirements.

Final instructions & online registration forms will be emailed out 4 days before the event.