1956 OS Ten Mile Road Map

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Steven
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1956 OS Ten Mile Road Map

Post by Steven » Thu Oct 15, 2020 09:28

Thanks to this post by someone,
someone wrote:
Thu Oct 08, 2020 10:53
The Ten Mile Map for 1956 on Sabre Maps show the route to Dover as the A259, although the same titled map from N.L.S. show it as the A20, so the change must have been around then.
They were right too! As I mentioned on that thread,
According to the relevant works, there was only one revision published in the 1950s (which was the 1956 revision as stated). But looking carefully at the source map for the SABRE Maps version against the NLS version shows a few subtle differences in the marginalia - the NLS's states Revision A, whereas ours has no letter code. Theirs has the copyright date of 1956, whereas ours says 1955.

There's a few other subtle differences - the A339 between Newbury and Basingstoke is shown as Trunk on the NLS's map, and not on ours. My personal copy of the map matches the NLS's.

To cut a long story short, it looks like the copy on SABRE Maps is actually one of the final proof editions from 1955...
So, the "1956 Ten Mile Road Map" we've had on SABRE Maps for years (that I knew Ritchie had arranged with the British Library that we could reuse) turned out to be one of the ultra-rare proof editions from 1955, from which the roads were updated to give us the "real" 1956 map.

So, following that revelation, that map has been moved to a more correct 1955 label, and the real 1956 revision A map has been scanned, georeferenced, tiled and now uploaded to SABRE Maps. I've now found quite a number of differences between the two maps other than those mentioned on that thread (such as the A457 and A4126 not being shown fully on the 1955 proof edition) - what else is there?
Steven

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c2R
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Re: 1956 OS Ten Mile Road Map

Post by c2R » Thu Oct 15, 2020 23:00

This is really interesting - I've spotted that the A6120 is shown as trunk in the later version (and indeed the previous 1940s version, but not in the 1955 proof.
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frediculous_biggs
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Re: 1956 OS Ten Mile Road Map

Post by frediculous_biggs » Fri Oct 16, 2020 11:39

The A228 only goes as far north as Hoo on the 1955 edition but reaches Grain in 1956.
B2074 appears in Ashford in the 1956 edition.
The A603 in Sandy gains a spur in 1956.
A500 in north west London becomes the A41 too.

One thing I'm not sure on though - what's the difference between a solid black line and a dashed one? I noticed the dashes only appear in urban areas but then the A406 loses a small section of "dashing" near Chiswick between the two editions, as does the A13 between the A112 and A117 near Beckton

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Steven
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Re: 1956 OS Ten Mile Road Map

Post by Steven » Fri Oct 16, 2020 13:06

frediculous_biggs wrote:
Fri Oct 16, 2020 11:39
One thing I'm not sure on though - what's the difference between a solid black line and a dashed one? I noticed the dashes only appear in urban areas but then the A406 loses a small section of "dashing" near Chiswick between the two editions, as does the A13 between the A112 and A117 near Beckton
It's because of a peculiarity in the Trunk Road legislation - roads were not allowed to be Trunked through County Boroughs, so the dashed lines show where Trunk Roads go through County Boroughs.
Steven

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