Hamilton was reportedly the worst "offender" (not his fault, he was exploring a grey area) and the only one to be warned. Masi's note to the drivers said that they could run wide at the exit of that corner, but only if you do not gain an advantage by doing so.

Of course, the only reason you would run wide is because it gains you an advantage.

1. FIA issue directive on Friday saying Running wide in T4 will be policed only in qualifying not in the race

Why was this directive a thing though? It's like saying you're only going to award throw-ins in the first half

Imagine someone in F1 having their engine dulled at the end of a straight or at the mid point of a fast corner with someone right on their tail, even an acceleration zone out of a slow corner, you'd have airplane accidents week in week out. Think Webber/Kovaleinen at Valencia, Rosberg/Karthikeyan at Abu Dhabi.

When I go karting and do something that is not allowed, like hitting another kart, the system automatically slows me down for a couple of seconds. How difficult can it be to use that without doubt very high tech technology in F1?

Pretty easy to do but it's an incredibly dumb idea.

A tyre wall is probably the easiest and cheapest thing to implement there.

This idea used to be dumb, as races like Monza 1996 and Hockenheim pre-1994 have shown, but now with the HALO it becomes good again.

I am not sure if you mean a free pack of tyres, but it could work. No risk for the driver's head in collisions, and if it causes someone to flip once in a decade because they hit it the wrong angle, then tough luck, it's still somewhat low speed and they still have the HALO.

It also means that if someone forces you wide, you can still escape on the other side of the tyre pack, unlike a wall close to the track. Heck, I've seen tyres used on karting tracks in a 70-ish kph fast chicane, and you're going in there basically naked. But it works, people fall back in single file instead of encouraging cutting and bad ideas.