[leong124]

Today I've found that the player collisions are lost when you stand on a vehicle with NPC driving.
I used CreateVehicle and haven't tested for AddStaticVehicle(Ex).
Everything is normal when stand on other vehicle(at least without a driver).

Also, as I've found days ago, when you switch on and then switch off the vehicle alarm for the vehicles which has installed hydraulics by SetvehicleParamsEx, the horn sound will still be there until you exit (and enter) the vehicle.

[DVDK]

All the collisions are lost, it doesn't matter if you're on a vehicle while an NPC is driving, just on a normal player you would get the same result.
It's just normal.

[Redirect Left]

I get this all the time, where I can walk through vehicles. It didn't happen for me prior to 0.3c

[Rac3r]

I only get this when there is loads of objects, I think to help performance, vehicle collision files are ignored, to make way for the object collision data.
Well, that's what I'm guessing to be the cause.

[[Fx]GhOsT]

nah, he is talking about surfing.

But thats true, if you reach the sa-mp object limit, default gta objects starts losing collisions. (Like fences and etc)