Seems worth asking in here rather than creating a new thread.
How safe are axle stands? I've bought stuff to change the oil/filters on my car and at my old house it was fairly safe as it was a quiet terraced street. Now, whilst the road outside my house is a lot quieter, it's a private lane which leads to a few industrial units. There is a speed bump around 50m from the house and sometimes lorries bounce over it causing the ground to rumble a bit.
Whilst it's rare for lorries to go down the lane out of business houses. I have visions of one turning up whilst i'm under the car and causing the car to fall down on top of me!