what does the bar mean at the end of yellow lines on roads i/e parking?

Answer 1

it is the place where you are to stop behind so that the car 90 degrees from you can make the turn. that's on the road.

In a parking lot where the "roads" intrersect a big white line means the same as a stop sign

Answer 2

If you mean the white bar, across the lane at an intersection, It is usually placed where there is a stop sign. That is the safe point to stop at before proceeding. and it is also more visible sometimes on a foggy night.

Answer 3

its the opening for you to enter the road after leaning in , not else where