Aggressive driving is strictly prohibited.
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No careless driving. Always show respect for your fellow racers. Be careful. Show some patience. Understand the limitations of your car and yourself and drive accordingly. Driving online in a racing sim is NOT exactly the same as real life racing in every respect.
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Contacts and collisions must be avoided at all costs.
Pushing other cars in turns or pushing them off the track is strictly prohibited.
Leaning on other cars is strictly prohibited in any situation.
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The behind driver must take all necessary care and responsibility not to run into an ahead driver.
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You must establish substantial overlap with the car ahead before they reach the corner’s turn-in point to have the right to drive up their inside, or to expect them to leave inside room for you. At least the front of your car should be up to the driver’s position in the ahead car. The ahead driver has the right to be fully committed to the racing line of their choice without any interference if there was no substantial overlap before he turned in.
If sufficient overlap is established before the turn-in point, then the behind driver has the right to sufficient side room. The ahead driver must also leave sufficient side room for the behind driver. This means that each driver has a right to their respective "line", or side of the track, right up to the exit point. Neither driver should squeeze the other toward the inside or outside of the corner during the apex or exit.
If an ahead driver has clearly made an error to warrant a passing move, a behind driver may attack their position, with due caution and care, regardless of whether there was any pre-existing overlap. However, the overtaking driver must still avoid contact. Small errors by the ahead driver may not justify a passing move. The ahead driver getting a bit out of shape at times doesn’t give you an automatic right to pass. You still have to judge if their error allows for a safe pass to take place.
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Your goal on turn 1 should not be to get to the front, but rather to convert a double wide start field to a single file running order. Look ahead more than one car. Due to field compression, a compact field will run slower through the first few turns than a spread out one. Leave some extra space, but not too much. Drivers behind you won't be expecting sudden braking.
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Leading cars have the right to choose their own line down a straight. They can change their racing line once while driving down a straight (Move from the outside line to the inside, or vice versa). As they approach the next corner, they can return to the racing line of their choice However, they're not allowed to change their line when the behind driver is directly behind and changes his line to try and make a pass. If your movement causes an accident, you're responsible.
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Leading cars have the right to take their line of choice through corners. I.e. they may drive a defensive line around the inside of a corner to protect their position, thereby forcing an attacking driver to try to pass around the outside. This is not blocking and is part of normal racing etiquette. In fact, apart from the restrictions of rule 10:A, a leading driver can drive any line which they feel is the most inconvenient for any following car to try to pass them.