Chapter 04 - Road Network

Chapter 04 - Road Network

1. Introduction

1.1 This chapter provides information about public road lengths by local authority, road class, type and speed limit. It also includes statistics on the amount of trunk road constructed/re-surfaced and information on the residual life of the trunk road network.

1.2. Unusual year to year changes in the reported road lengths may be due to the gradual introduction of Geographical Information Systems (GIS) to calculate road lengths by the data providers - see road network section of the user guide.

Key Points

• Scotland has 57,077 km of road network.
• Seven per cent is trunk road (1% is motorway).
• Scotland has 10.4 km of road per 1,000 people compared to 6.1 km in GB.

2. Main Points

Road length

2.1 There were 57,077 kilometres of public road in Scotland at 31 March 2021. The trunk road network accounted for 7% of the total. Other (non-trunk) A roads represented 13% of the total. Minor roads (B and C roads, and unclassified roads) accounted for the remaining 80% of roads. (Table 4.1)

2.2 There was little change in the length of the motorway between April 2020 and April 2021. (Table 4.1)

2.3 Over a quarter of the total trunk road network, and about one-seventh of the Scottish road network, is within the area of the Highland Council. Around 10% of the Scottish road network is within the Aberdeenshire Council area and a further 8% is within the Dumfries and Galloway Council area. These three local authorities account for almost a third of Scotland's road network. (Table 4.2)

Road Maintenance

2.4 Overall there was an increase of 55% in the amount of trunk road that was newly constructed, reconstructed, strengthened or surface dressed in 2021-22 compared to the previous year. (Table 4.3)

2.5 In 2021-22, 15.2% of the motorway network, 12.4% of the dual carriageway and 17.0% of the single carriageway trunk road network required close monitoring of the state of the road surface. (Table 4.5 (b))

2.6 In 2021-22 the National Road Condition Indicator (RCI) showed 28% of the local authority A road network may, following more detailed examination, require some kind of maintenance (see the road network section of the user guide. For the whole of the local authority network (all road categories), about 34% may similarly require some kind of maintenance. (Table 4.6)

Notes

This worksheet contains one table.

note 1

Motorway road lengths are derived from GIS from 2000 onwards - see commentary for more details.

note 2

Road lengths are physical length rather than carriageway length e.g. 10km of dual carriageway counts as 10km, not 20km.

note 3

These figures now include A road slip roads which have been excluded from the figures in previous publications. The time series has been updated to include this data resulting in an increase of 3-4% in Trunk road length and an increase in overall road length of 0.2%. The methodology for calculating the trunk road totals from the database has also changed resulting in some small changes to road lengths from those previously published.

note 4

Trunk road lengths for these roads have now been derived more accurately using a GIS system from 2006.

note 5

For 2008 and 2009 single and dual carriageways figures are estimated.

note 6

As at 30 May 2014.

note 7

Local authority road lengths at the end of the financial year e.g. 2013=2013/14.

note 8

Motorway road lengths have been consolidated using a GIS system which means that there will be some changes to previously published figures.

note 9

Triangulation with other sources of road length data has occurred to improve the quality of the information. Figures may not be comparable with previous editions.

note 10

The drop in the length of trunk A roads from last year is probably due to the detrunking of A80 with the opening of the M80.

note 11

Local authority road lengths at the end of the financial year.

note 12

FBOC records are now incorporated into South East following the introduction of the Newtork Maintenance Contracts, August 2020

note 13

Residual life represents the number of years to elapse before the pavement reaches the stage when it may be necessary to undertake relatively more expensive reconstruction rather than strengthening to restore its full life.

note 14

Method of calculation changed in 2011-12.

note 15

The part of the network that requires close monitoring is that which has a residual life of less than zero. Note: it has been decided that surveyed network length is not required as the figures produced are now representative of the whole network as shown in Table 4.1.

note 16

These figures are provisional.

note 17

FBOC records are now incorporated into South East following the introduction of the Newtork Maintenance Contracts, August 2020

note 18

From 2007-08 the basis of the statutory road performance indicator in Scotland changed to the UK Standard Road Condition Indicator.

note 19

While it has been possible, following the change to the indicator, to calculate the equivalent RCI value for all classified roads from 2005-06, it has not been possible to do this in a reliable manner for unclassified roads, owing to a lack of cracking data for those years. As unclassified roads represent a significant part of the total road network, RCI data for the network is similarly not available for this period. It is important to note that owing to the different formulation, no valid comparison can or should be made between the two series.

note 20

The categories used to indicate the condition of the road are in brief: amber - further investigation should be undertaken to establish if treatment is required. red - the road has deteriorated to the point at which it is likely repairs to prolong its future life should be undertaken.

note 21

Information for 2002-03 is available only for A roads.

note 22

The SPI figures for Scotland in 2004-05 exclude Glasgow, as the survey in Glasgow was undertaken on a different basis in that year.

note 23

For 2020-21 a new filter was introduced in accordance with the revised standard ISO 13473-1. This has led to an increase in the recorded texture values of between 0.03 and 0.06mm, which in turn has resulted in a slight reduction in the reported red and amber values which make up the performance indicator.

Table 4.1 Public road lengths by class, type and speed limit [Note 1] [Note 2]. This worksheet contains one table. Some cells refer to notes which can be found in the notes worksheet. Source: Transport Scotland - Not National Statistics

Road type	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021
Trunk roads [Note 3] [Note 6]
											Kilometres
Motorways excluding slip roads	396	420	420	420	420	440	449	449	445	444	444
Motorways Including slip roads	558	599	599	600	601	632	645	645	651	652	653
A roads dual carriageway	511	500	500	504	504	505	510	554	553	552	560
A roads single carriageway	2,282	2,279	2,274	2,326	2,326	2,327	2,320	2,310	2,307	2,304	2,297
A roads other inc slips/roundabout	185	188	191	208	208	204	205	226	228	231	238
A roads total	2,978	2,968	2,966	3,037	3,037	3,036	3,036	3,090	3,088	3,086	3,094
A roads by speed limit:
A roads up to 40 mph	235	237	237	243	243	245	248	241	245	244	242
A roads over 40 mph	3,302	3,330	3,328	3,395	3,395	3,424	3,433	3,494	3,494	3,495	3,506
All trunk roads [Note 3] [Note 4]	3,536	3,566	3,565	3,637	3,638	3,669	3,681	3,735	3,739	3,739	3,747
Local Authority major roads [Note 7]
Motorways excluding slip roads	-	-	-	-	-	-	-	-	-	-	-
Motorways Including slip roads	-	-	-	-	-	-	-	-	-	-	-
A roads dual carriageway	232	268	270	272	272	272	271	271	303	303	302
A roads single carriageway	7,235	7,204	7,203	7,134	7,142	7,146	7,156	7,230	7,227	7,221	7,225
A roads total	7,467	7,473	7,473	7,406	7,414	7,418	7,427	7,500	7,529	7,524	7,528
A roads by speed limit:
A roads up to 40 mph	1,559	1,567	1,572	1,616	1,621	1,630	1,642	1,691	1,709	1,704	1,709
A roads over 40 mph	5,907	5,906	5,901	5,791	5,792	5,788	5,785	5,809	5,820	5,820	5,819
All LA major roads [Note 4]	7,467	7,473	7,473	7,406	7,414	7,418	7,427	7,500	7,529	7,524	7,528
Local Authority minor roads [Note 7]
B roads limit up to 40 mph	1,189	1,194	1,194	1,228	1,226	1,230	1,235	1,241	1,242	1,244	1,249
B roads limit over 40 mph	6,310	6,309	6,305	6,270	6,276	6,268	6,255	6,266	6,275	6,275	6,278
B roads Total	7,499	7,504	7,500	7,498	7,502	7,498	7,491	7,506	7,517	7,520	7,527
C roads limit up to 40 mph	1,582	1,586	1,593	1,621	1,653	1,658	1,658	1,666	1,679	1,682	1,685
C roads limit over 40 mph	9,105	9,104	9,098	9,060	9,051	9,045	9,043	9,021	9,018	9,020	9,041
C roads total	10,687	10,690	10,691	10,681	10,703	10,703	10,701	10,687	10,697	10,701	10,726
Unclassified roads limit up to 40 mph	14,856	14,948	15,020	15,097	15,198	15,273	15,379	15,465	15,561	15,759	15,853
Unclassified roads limit over 40 mph	11,727	11,732	11,728	11,735	11,696	11,688	11,686	11,697	11,679	11,716	11,696
Unclassified roads Total	26,583	26,680	26,748	26,832	26,895	26,962	27,065	27,162	27,240	27,475	27,549
All LA minor roads	44,769	44,873	44,938	45,011	45,100	45,163	45,257	45,355	45,454	45,696	45,802
All roads (trunk and LA) [Note 3]
Motorways excluding slip roads	396	420	420	420	420	440	449	449	445	444	444
Motorways Including slip roads	558	599	599	600	601	632	645	645	651	652	653
A, B and C roads dual carriageway [Note 5]	742	768	770	776	775	776	781	824	856	854	862
A, B and C roads single carriageway [Note 5]	27,703	27,677	27,667	27,639	27,674	27,675	27,668	27,733	27,747	27,746	27,775
A, B and C roads total	28,630	28,633	28,629	28,623	28,656	28,656	28,654	28,784	28,832	28,831	28,875
by speed limit:
A, B and C roads up to 40 mph	4,565	4,584	4,595	4,708	4,743	4,763	4,783	4,839	4,875	4,874	4,884
A, B and C roads over 40 mph	24,624	24,648	24,632	24,515	24,515	24,525	24,516	24,590	24,607	24,609	24,643
Unclassified roads limit up to 40 mph	14,856	14,948	15,020	15,097	15,198	15,273	15,379	15,465	15,561	15,759	15,853
Unclassified roads limit over 40 mph	11,727	11,732	11,728	11,735	11,696	11,688	11,686	11,697	11,679	11,716	11,696
Total	26,583	26,680	26,748	26,832	26,895	26,962	27,065	27,162	27,240	27,475	27,549
All roads [Note3] [Note 4]	55,772	55,912	55,975	56,054	56,152	56,250	56,364	56,591	56,722	56,959	57,077

Table 4.2 Public road lengths by council area and class, 2021/22. This worksheet contains one table. Some cells refer to notes which can be found in the notes worksheet. Source: Transport Scotland - Not National Statistics

Council	Trunk motorway [Note 8]	Trunk motorway slips	Trunk A Roads	Trunk total	Local Authority A Roads [Note9] [Note 11]	Local Authority B Roads [Note9] [Note 11]	Local Authority C Roads [Note9] [Note 11]	Local Authority Unclassified [Note9] [Note 11]	Local Authority Total [Note9] [Note 11]	Total all roads
										kilometres
Aberdeen City	-	-	34	34	129	42	96	734	1,001	1,035
Aberdeenshire	-	-	233	233	688	814	1,548	2,532	5,582	5,815
Angus	-	-	55	55	193	255	489	885	1,821	1,875
Argyll & Bute	-	-	296	296	505	614	434	733	2,286	2,583
Clackmannanshire	-	-	3	3	50	34	28	181	293	296
Dumfries & Galloway	59	14	279	352	495	735	1,179	1,793	4,202	4,554
Dundee City	-	-	20	20	37	17	96	427	576	596
East Ayrshire	11	4	56	70	124	193	211	643	1,171	1,241
East Dunbartonshire	-	-	-	-	57	47	34	392	529	529
East Lothian	-	-	59	59	118	168	224	629	1,138	1,197
East Renfrewshire	9	3	10	22	31	50	83	323	487	509
Edinburgh, City of	19	14	34	67	137	52	120	1,140	1,448	1,515
Eilean Siar	-	-	-	-	340	177	189	487	1,192	1,192
Falkirk	39	14	5	58	114	96	118	660	988	1,046
Fife	20	9	96	126	320	325	352	1,450	2,446	2,572
Glasgow, City of	52	54	2	108	135	64	209	1,427	1,834	1,943
Highland	-	-	963	963	1,400	982	1,446	2,943	6,771	7,733
Inverclyde	-	-	28	28	24	23	54	273	373	401
Midlothian	-	-	39	39	93	100	101	405	699	738
Moray	-	-	98	98	157	296	365	740	1,559	1,658
North Ayrshire	-	-	67	67	101	155	207	582	1,044	1,111
North Lanarkshire [Note 10]	57	31	20	108	152	146	250	1,066	1,614	1,722
Orkney Islands	-	-	-	-	161	205	160	459	985	985
Perth & Kinross	39	14	214	267	436	369	638	1,069	2,512	2,780
Renfrewshire	18	12	26	57	65	62	140	565	833	889
Scottish Borders	-	-	167	167	458	599	769	1,154	2,981	3,147
Shetland Islands	-	-	-	-	225	162	198	467	1,052	1,052
South Ayrshire	-	-	93	93	108	214	232	626	1,180	1,272
South Lanarkshire	65	21	58	144	268	247	444	1,318	2,276	2,421
Stirling	22	6	116	144	212	161	171	474	1,017	1,162
West Dunbartonshire	-	-	23	23	46	8	27	298	379	402
West Lothian	35	13	-	47	152	117	116	674	1,059	1,106
Total	444	209	3,094	3,747	7,528	7,527	10,726	27,549	53,329	57,077
										percentages
Aberdeen City	-	-	1.1	0.9	1.7	0.6	0.9	2.7	1.9	1.8
Aberdeenshire	-	-	7.5	6.2	9.1	10.8	14.4	9.2	10.5	10.2
Angus	-	-	1.8	1.5	2.6	3.4	4.6	3.2	3.4	3.3
Argyll & Bute	-	-	9.6	7.9	6.7	8.2	4.0	2.7	4.3	4.5
Clackmannanshire	-	-	-	0.1	0.7	0.5	0.3	0.7	0.5	0.5
Dumfries & Galloway	13.3	6.9	9.0	9.4	6.6	9.8	11.0	6.5	7.9	8.0
Dundee City	-	-	0.6	0.5	0.5	0.2	0.9	1.5	1.1	1.0
East Ayrshire	2.4	1.8	1.8	1.9	1.7	2.6	2.0	2.3	2.2	2.2
East Dunbartonshire	-	-	-	0.0	0.8	0.6	0.3	1.4	1.0	0.9
East Lothian	-	-	1.9	1.6	1.6	2.2	2.1	2.3	2.1	2.1
East Renfrewshire	2.1	1.3	0.3	0.6	0.4	0.7	0.8	1.2	0.9	0.9
Edinburgh, City of	4.2	6.8	1.1	1.8	1.8	0.7	1.1	4.1	2.7	2.7
Eilean Siar	-	-	-	0.0	4.5	2.3	1.8	1.8	2.2	2.1
Falkirk	8.8	6.5	0.2	1.5	1.5	1.3	1.1	2.4	1.9	1.8
Fife	4.5	4.4	3.1	3.4	4.2	4.3	3.3	5.3	4.6	4.5
Glasgow, City of	11.8	25.8	0.1	2.9	1.8	0.8	2.0	5.2	3.4	3.4
Highland	-	-	31.1	25.7	18.6	13.0	13.5	10.7	12.7	13.5
Inverclyde	-	-	0.9	0.7	0.3	0.3	0.5	1.0	0.7	0.7
Midlothian	-	-	1.2	1.0	1.2	1.3	0.9	1.5	1.3	1.3
Moray	-	-	3.2	2.6	2.1	3.9	3.4	2.7	2.9	2.9
North Ayrshire	-	-	2.2	1.8	1.3	2.1	1.9	2.1	2.0	1.9
North Lanarkshire	12.8	14.7	0.7	2.9	2.0	1.9	2.3	3.9	3.0	3.0
Orkney Islands	-	-	-	0.0	2.1	2.7	1.5	1.7	1.8	1.7
Perth & Kinross	8.7	6.9	6.9	7.1	5.8	4.9	5.9	3.9	4.7	4.9
Renfrewshire	4.1	5.7	0.8	1.5	0.9	0.8	1.3	2.1	1.6	1.6
Scottish Borders	-	-	5.4	4.5	6.1	8.0	7.2	4.2	5.6	5.5
Shetland Islands	-	-	-	0.0	3.0	2.2	1.8	1.7	2.0	1.8
South Ayrshire	-	-	3.0	2.5	1.4	2.8	2.2	2.3	2.2	2.2
South Lanarkshire	14.5	10.2	1.9	3.9	3.6	3.3	4.1	4.8	4.3	4.2
Stirling	4.9	3.0	3.8	3.8	2.8	2.1	1.6	1.7	1.9	2.0
West Dunbartonshire	-	-	0.7	0.6	0.6	0.1	0.3	1.1	0.7	0.7
West Lothian	7.8	6.1	-	1.3	2.0	1.6	1.1	2.4	2.0	1.9
Total	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0	100.0

Table 4.3 Trunk road constructed/re-surfaced etc. This worksheet contains one table. Some cells refer to notes which can be found in the notes worksheet. Source: Transport Scotland - Not National Statistics

Constructed/resurfaced	2011-12	2012-13	2013-14	2014-15	2015-16	2016-17	2017-18	2018-19	2019-20	2020-21	2021-22 (prov)
Equivalent road lane length											lane-kilometres (estimated)
New roads constructed/opened	132	-	18	3	3	0.5	86	125	2	1	33
Reconstructed	57	1	9	7	-	1	1	1	3	3	9
Strengthened	168	338	360	365	367	428	457	564	574	355	509
Surface dressed	10	21	11	14	8	29	33	16	16	1	9
Total	367	360	398	389	378	459	577	706	594	360	559
Percentages of total											percentages
New roads constructed/opened	36	-	5	1	1	0	15	18	0	0	6
Reconstructed 1	16	0	2	2	-	0	0	0	1	1	2
Strengthened	46	94	90	94	97	93	79	80	97	99	91
Surface dressed	3	6	3	4	2	6	6	2	3	0	2
Total	100	100	100	100	100	100	100	100	100	100	100

Table 4.4 (a) Trunk road constructed/re-surfaced etc, by unit, 2020-21. This worksheet contains one table. Some cells refer to notes which can be found in the notes worksheet. Source: Transport Scotland - Not National Statistics

Unit	New road constructed for traffic	Reconstructed	Strengthened	Surface dressed	Total
Equivalent road lane length			lane-kilometres (estimated)
NW	-	-	191	0	191
NE	-	1	127	3	132
SW	2	2	155	7	165
SE [Note 12]	-	0	100	5	106
Total	2	3	574	16	594
Percentages of total			percentages
NW	-	-	33	2	32
NE	-	35	22	22	22
SW	100	51	27	42	28
SE	-	14	18	34	18
Total	100	100	100	100	100

Table 4.4 (b) Trunk road constructed/re-surfaced etc, by unit, 2021-22 (provisional). This worksheet contains one table. Some cells refer to notes which can be found in the notes worksheet. Source: Transport Scotland - Not National Statistics

Unit	New road constructed for traffic	Reconstructed	Strengthened	Surface dressed	Total
Equivalent road lane length					lane-kilometres (estimated)
NW	19	2	186	-	207
NE	-	2	134	8	144
SW	14	4	74	0	92
SE [Note 12]	-	1	115	1	116
Total	33	9	509	9	559
Percentages of total					percentages
NW	58	24	36	-	37
NE	-	17	26	90	26
SW	42	48	15	1	17
SE	-	11	23	9	21
Total	100	100	100	100	100

Table 4.5 Trunk road network: Residual Life [Note 13] (years). This worksheet contains one table. Some cells refer to notes which can be found in the notes worksheet. Source: Transport Scotland - Not National Statistics. (a) Residual Life of Pavements (i.e. road surface) as percentage of whole network

	Residual Life (years)
Years	<0	0-4	5-9	10-14	15-19	>19
1997-98	11	8	11	8	8	54
1998-99	10	9	9	8	7	57
1999-00	10	8	10	9	10	53
2000-01	9	7	9	8	8	59
2001-02	4	4	7	7	10	68
2002-03	4	4	7	7	11	67
2003-04	4	4	6	7	12	67
2004-05	4	5	6	7	13	65
2005-06	4	4	6	7	15	63
2006-07	5	4	6	7	15	63
2007-08	4	4	7	7	13	65
2008-09	4	4	6	7	11	68
2009-10	5	5	7	8	11	64
2010-11	5	4	6	7	9	69
2011-12 [Note 14]	10	7	10	10	11	52
2012-13	13	8	10	10	12	46
2013-14	14	8	10	9	11	49
2014-15	13	7	9	9	12	50
2015-16	12	9	9	9	13	48
2016-17	12	9	9	9	12	49
2017-18	11	9	9	9	12	51
2018-19	11	9	9	9	12	51
2019-20	11	8	9	9	13	50
2020-21	11	8	9	9	12	50
2021-22 [Note 16]	16	9	9	9	15	42
Operating Company Areas 2021-22 [Note 16]
North West Unit	21	10	10	9	14	36
North East Unit	16	11	10	10	19	34
South East Unit [Note 17]	9	9	9	8	14	52
South West Unit	12	7	8	8	12	54

Table 4.5 Trunk road network: Residual Life [Note 13] (years). This worksheet contains one table. Some cells refer to notes which can be found in the notes worksheet. Source: Transport Scotland - Not National Statistics. (b) The proportion of the motorway/dual and single carriageway trunk road network, which require close monitoring [Note 15]

Year	Motorways requires close monitoring	Dual carriageways requires close monitoring	Single carriageways requires close monitoring
	%	%	%
2002-03	7.5	5.2	-
2003-04	9.0	5.1	-
2004-05	9.2	3.9	-
2005-06	6.7	3.2	-
2006-07	6.1	2.7	-
2007-08	8.2	3.9	-
2008-09	4.3	4.1	-
2009-10	6.3	5.5	3.7
2010-11	6.2	3.4	4.2
2011-12 [Note 14]	12.9	9.1	10.3
2012-13	23.1	13.3	11.6
2013-14	23.4	15.0	10.3
2014-15	22.9	10.4	11.3
2015-16	21.5	9.8	10.5
2016-17	16.9	10.7	11.5
2017-18	13.4	8.6	11.3
2018-19	14.5	9.2	10.7
2019-20	15.7	10.6	10.1
2020-21	14.5	10.7	10.6
2021-22 [Note 16]	15.2	12.4	17.0
Operating Company Areas 2021-22 [Note 16]
North West Unit	-	16.7	21.15
North East Unit	14.5	14.58	18.7
South East Unit [Note 17]	16.18	4.92	5.19
South West Unit	14.41	10.93	11.3

Table 4.6a Local authority road network condition [Note 18] [Note 19]. This worksheet contains one table. Some cells refer to notes which can be found in the notes worksheet. Source: Scottish Road Maintenance Condition Survey - Not National Statistics

(a) in each Council area: 2021-22	A roads condition red	A roads condition amber	B roads condition red	B roads condition amber	C roads condition red	C roads condition amber	Unclassified condition red	Unclassified condition amber	All roads condition red	All roads condition amber
										percentage
Aberdeen City	3	18	3	22	4	18	5	25	5	23
Aberdeenshire	2	18	1	17	2	16	4	24	3	20
Angus	3	22	5	32	4	23	6	28	5	26
Argyll & Bute	7	30	15	42	15	40	16	35	14	37
Clackmannanshire	3	24	2	17	4	23	8	33	6	28
Dumfries & Galloway	6	28	5	30	10	35	17	39	12	35
Dundee City	2	17	1	20	1	14	4	24	4	22
East Ayrshire	2	15	3	23	5	24	10	31	7	27
East Dunbartonshire	5	24	3	22	5	24	6	29	6	27
East Lothian	3	24	3	27	2	21	6	29	4	26
East Renfrewshire	3	17	4	20	7	27	10	33	8	29
Edinburgh, City of	6	24	4	20	5	23	9	30	8	28
Eilean Siar	5	27	6	31	6	40	7	38	6	34
Falkirk	4	26	4	27	4	29	6	29	5	28
Fife	5	24	6	29	4	26	5	30	5	28
Glasgow, City of	5	26	3	24	3	20	4	25	4	24
Highland	3	23	6	30	8	30	11	30	8	29
Inverclyde	1	15	2	28	5	32	5	29	5	28
Midlothian	3	21	4	23	4	26	9	33	7	29
Moray	2	21	1	17	2	17	6	26	4	22
North Ayrshire	5	25	3	26	5	34	6	28	5	29
North Lanarkshire	2	15	3	20	4	23	5	27	4	25
Orkney Islands	2	23	2	18	2	14	3	21	2	20
Perth & Kinross	7	29	3	28	3	26	4	27	4	27
Renfrewshire	2	15	2	19	5	26	5	26	5	24
Scottish Borders	5	30	5	31	5	30	12	37	8	33
Shetland Islands	1	14	5	27	3	29	8	37	5	29
South Ayrshire	4	25	6	29	7	31	11	32	8	31
South Lanarkshire	3	21	3	23	5	30	4	25	4	26
Stirling	4	25	5	32	8	33	12	33	9	31
West Dunbartonshire	3	15	3	14	3	19	5	26	4	24
West Lothian	3	22	4	26	6	33	4	26	4	26
Scotland	4	24	6	28	6	27	7	29	6	28

Table 4.6b Local authority road network condition [Note 18] [Note 19]. This worksheet contains one table. Some cells refer to notes which can be found in the notes worksheet. Source: Scottish Road Maintenance Condition Survey - Not National Statistics

(b) for Scotland as a whole: 2005-06 to 2020-21 (New RCI Series) [Note 19]	A roads condition red	A roads condition amber	B roads condition red	B roads condition amber	C roads condition red	C roads condition amber	Unclassified condition red	Unclassified condition amber	All roads condition red	All roads condition amber
										percentage
2005-06	4	27	4	28	4	31	..	..	..	..
2006-07	4	29	4	29	4	32	..	..	..	..
2007-08	5	29	6	34	5	33	..	..	..	..
2008-09	5	28	5	34	5	33	7	37	6	34
2009-10	6	30	6	35	5	33	8	39	7	36
2010-11	6	30	7	36	7	35	10	42	8	38
2011-12	6	30	8	36	8	36	8	38	8	36
2012-13	5	24	7	28	7	28	9	30	7	29
2013-14	5	24	7	28	8	28	9	30	8	29
2014-15	5	24	7	29	9	29	9	30	8	29
2015-16	4	25	6	29	6	28	9	31	7	29
2016-17	4	25	6	29	6	28	9	31	7	29
2017-18	4	26	6	29	7	29	8	31	7	30
2018-19	4	26	6	29	7	29	8	31	7	29
2019-21	5	26	6	29	7	29	8	30	7	29
2020-21	4	25	6	28	6	28	8	30	7	29
2021-22	4	24	6	28	6	27	7	29	6	28

Table 4.6c Local authority road network condition [Note 18] [Note 19]. This worksheet contains one table. Some cells refer to notes which can be found in the notes worksheet. Source: Scottish Road Maintenance Condition Survey - Not National Statistics

(c ) for Scotland as a whole: 2002-03 [Note 20] to 2007-08 (Old SPI Series)	A roads condition red	A roads condition amber	B roads condition red	B roads condition amber	C roads condition red	C roads condition amber	Unclassified condition red	Unclassified condition amber	All roads condition red	All roads condition amber
										percentage
2002-03 [Note 21]	9	37	..	..	..	..	..	..	..	..
2003-04	7	33	12	45	8	37	18	52	13	45
2004-05 [Note 22]	6	31	10	43	5	31	15	50	11	42
2005-06	6	31	9	40	4	29	14	51	10	42
2006-07	6	34	11	35	5	29	18	57	13	47
2007-08 [Note 23]	6	34	10	46	6	36	16	53	12	46

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