Renumbering: A860-A899

The following data contains an element of speculation at this present point in time.

The road numbers indicated have not been disambiguated as yet, and so may point to a more recent incarnation of that number.

Date	No.	Route	Replaced / Notes
16/5/24	A860	Great Cumbrae Island	-
	A861	Drimsallie - Corran - Acharcle (Shiel Pier)	B849, B850
	A862	Inverness - Fort Augustus	B851
	A863	Sligachan - Bracadale - Dunvegan	B883
	A864	Link in Dunvegan between A850 and A863	-
	A865	Uist (?)
	A866	Stornoway - Portnaguran	-
It seems plausible that the first 7 numbers were all issued on the first known date for changes to the road numbers in Scotland, ie 16th May 1924. They work north then west through Zone 8 in a fairly logical manner. However, the next two while superficially in the same batch as A865/6, require a bit of to-and fro in the Western Isles, suggesting that they came subsequently. It will also be noted that had the A865 and A867 been allocated at the same time, then surely the A865 would have been the direct spine-road, with the A867 taking the long way around on North Uist.
c1925	A867	Lochmaddy - Clachan	B892 (part)
	A868	Branch to Tarbert Pier	B898
The following 3 numbers were all allocated to the Isle of Colonsay, and so were surely allocated at the same time.
c1926	A869	Scalasaig - Garvard	-
	A870	Scalasaig - Colonsay House	-
	A871	Scalasaig - Kiloran	-
It is possible that the Corran Ferry Spur was allocated a number at the same time as the Colonsay Roads, and working south and east from there the numbers up to A875 could be considered part of this group. This would appear to be the only example of numbers being allocated towards Glasgow rather than away from it.
c1926	A872	Branch to Corran Ferry	-
	A873	Port of Menteith - Thornhill - Blair Drummond	B825
	A874	Short Link at Balloch	-
	A875	Alderpark - Keoculloch	-
The A876 number was allocated to the Great Western Road route out of Glasgow. It is marked as under construction on a 1924 map extract, and known to have been opened in 1927. This fairly accurately dates the A876, and as the A878 was created seemingly as part of the same project, the next 3 numbers seem to have all been allocated together.
1927	A876	Glasgow - Anniesland (New City Road (part), Great Western Road)	B810
	A877	Link in Renfrew	-
	A878	Link at Old Kilpatrick	A810
The A879 could have been allocated with the above batch, or with the subsequent numbers, which work west then north to Caithness with the A882.
c1928	A879	Glasgow - Bardowie Station	B812
	A880	Ardentinny Ferry - Strone - Rashfield	B834
	A881	Broadford - Elgol	-
	A882	Wick - Duncansby - Thurso	B875, B876
We return to the central belt for the A883, then again head north west to the A884. However, returning south for the A885 seems unlikely if, as seems probable, road numbers were given out sequentially.
c1929	A883	Camelon - Denny	B818 (part) on 1930 map
	A884	Carnoch - Lochaline	B849
The next four numbers could again be considered as forming a single batch, working north out to Barra. However, doubling back to the A889, which is south of the A887 seems unlikely, so the A889 and A890 probably came later
c1930	A885	Dunoon - Sandbank	B835
	A886	Strachur - Kilfinan - Tighnabruaich	B837
	A887	Invermoriston - Cluanie Bridge Inn	B852
	A888	Barra	-
c1931	A889	Dalwhinnie - Laggan	B848
	A890	Kirkton - Lochcarron - Achnasheen	B855
The next six numbers can be considered as a single batch once more, working northwards from the central belt to Caithness. However, the A897 seems to have come a little later as it is not marked on the 1932 map, while the A895 is.
c1932	A891	Junction with A803 near Antermony Loch - Lennoxtown - Strathblane	B821
	A892	Callander - Dunmore Fort	B828
	A893	Ullapool
	A894	Skiag Bridge - Laxford Bridge	-
	A895	Latheron - Thurso	B873 on 1932 map
	A896	Wick Town - Wick Harbour	B874
c1933	A897	Helmsdale - Melvich	B872 not on 1932 map
The last two numbers are a little of an enigma. The A898 does not appear on any mapping or records so far discovered until the opening of the Erskine Bridge in 1970, while the A899 is clearly marked on maps dating back to 1946. Perhaps there is a short-lived A898 yet to be found, or perhaps the number was missed by the use of the A899 for the bypassed section of A8 prior to some of the routes above.
	A898
	A899	Link in Broxburn	A8