Difference in highway centreline markings

[Stefanmuller]

The solid-stripe-solid means no crossing, but that you may be able to cross a bit further ahead. Thus, the road you are driving on, allows for overtaking in certain areas, just not here as indicated by the roadmarking.

A narrow pass or something similar where it is dangerous to pass will likely have only a single solid line meaning you cant pass anywhere along the road.

Another thing is that it often indicates single lane/opposing direction traffic in roads where double lane same direction roads have come together. So it will mean the traffic on the other side of that line is coming from the opposite direction.

 

[genetic]

Let me post an example (random image from Google):

No dude, double solid line (with or without the dashed line in the middle) means no crossing - i.e. if there's a T junction where the top of the T is the road with the double solid line you can't turn right into the road as you'd be crossing the double white line. Single white line means you can do so. No overtaking is allowed in either circumstance.

^^
This.

http://www.trafficsigns.co.za/pdfs/rm_regul.pdf

 

[Progenix Oj101]

How many of you that didn't know the difference between single and double solid lines paid for your licenses?

Yes, I'm kidding