QUOTE: Originally posted by ahuffman . For example, I grew up in Ohio and edge line markings were introduced there circa 1960, initially on an experimental basis, and then were uniformly adopted for State, US, and Interstate routes after a reduced accident rate was confirmed.
In California the white lines along the side of the road are often called the "fog line". In a CALTRANS Traffic Manual pages dated 11-1991 (the earliest of have found) they are called the "right edgeline". The line denlineates the outside edge of the "traveled way". Pavenent to the right is shoulder. Except for specific exceptions in the Vehicle Code. It is not legal for motor vehicles to travel on the shoulder. The Manual shows a 4" wide solid white line and states "Right Edgeline pattern for use on all State Highways may be used on local streets and highways." I never saw a edge line before the mid 1960's. The Standard pattern for the 4" wide yellow centerline is shown as: 7' stripe-17' space-7' stripe -17' space-7' stripe: for speed zones less than 40 mph, :12' stripe-36' space-12' stripe: for 45 mph or more. The yellow (per my memory) replaced white in the 1960''s. Solid lines to designate no passing had been in use for many years before the yellow centerlines. Here are some mid 1940's photos from the Marysville, CA area (about 40 miles north of Sacramennto)
https://www.flickr.com/photos/152196592@N04/albums/72157683624620570
https://www.flickr.com/photos/152196592@N04/albums/72157685647839546
I tried to sell my two cents worth, but no one would give me a plug nickel for it.
I don't have a leg to stand on.
QUOTE: Originally posted by Chris Gallotti I seem to remember, during my days at UNB, sometime in the early to mid-70's the center stripes of highways in Quebec and/or New Brunswick changed from white to yellow. But I'm afraid I don't remember exactly which year (hey, it was the 70's man, and like they say, if you remember them, you weren't there :)
Ray Breyer
Modeling the NKP's Peoria Division, circa 1943