(7) Where the relevant road has a junction with the side of the other road and—
(a) a national speed limit is in force on the other road; and
(b) a maximum speed limit is in force on the relevant road,
then, for the purpose of indicating the national speed limit to traffic entering the other road from the relevant road, traffic signs shown in diagram 671 or 675 shall be placed in accordance with paragraph (8) on the relevant road not further than 20 metres from the junction.
(8) If the relevant road has one carriageway, one such sign shall be placed on each side of that carriageway and, if the relevant road is a dual carriageway road, one such sign shall be placed on each side of the carriageway by which traffic may pass from the relevant road into the other road.
Repeater signs
11.—(1) Paragraph (2) applies to the signs shown in diagrams 614, 632, 636, 636.1, 636.2, 637.1, 637.2, 637.3, 638, 638.1 when the arrow is omitted, 639 when the arrow is omitted, 639.1B, 640 when the arrow is omitted, 642, 646, 650.1, 650.2, 650.3, 660, 660.3, 660.4, 660.5, 660.6, 661A, 661.1, 662, 670 (except when displayed on a variable message sign in the manner mentioned in regulation 58(7)(b)), 672, 956, 957, 959, 959.1, 960, 960.1 and 961.
(2) Subject to paragraphs (3) and (4), signs to which this paragraph applies shall be placed at regular intervals along a road which is subject to a restriction, requirement, prohibition or speed limit which can be indicated by the signs.
(3) Signs shown in diagram 670 when varied to "20" need not be placed in accordance with paragraph (2) on a road within an area into which each entrance for vehicular traffic has been indicated by the sign shown in diagram 674.
(4) The sign shown in diagram 670 (except when displayed on a variable message sign in the manner mentioned in regulation 58(7)(b)) shall not be placed along—
(a) a road on which there is provided a system of carriageway lighting furnished by lamps lit by electricity placed not more than 183 metres apart in England and Wales or not more than 185 metres apart in Scotland and which is subject to a speed limit of 30 mph; or
(b) a motorway on which a national speed limit is in force.
(5) The sign shown in diagram 671 shall be placed at regular intervals along the length of a road (other than a motorway) on which—
(a) there is a system of street or carriageway lighting furnished by lamps lit by electricity placed not more than 183 metres apart in England and Wales or not more than 185 metres apart in Scotland; and
(b) a national speed limit is in force.
Signs to be placed only on specified types of road
12.—(1) The signs shown in diagrams 2001, 2002, 2003, 2004, 2005, 2005.1, 2006, 2007, 2008, 2009, 2010.1, 2010.2, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2021.1, 2022, 2023, 2024, 2025, 2030, 2030.1, 2032, 2033, 2034, 2035 and 2717 may be placed only on or near a primary route.
(2) The signs shown in diagrams 2026, 2027, 2027.1, 2028 and 2029 may be placed only on a primary route, or on a non-primary route at a junction with a primary route.
13.—(1) The signs shown in diagrams 2101, 2101.1, 2101.2, 2102, 2102.1, 2103, 2104, 2105.1, 2106.1, 2107, 2108, 2109, 2110, 2111, 2111.1, 2112, 2113, 2113.1, 2114, 2114.1, 2115, 2115.1, 2116, 2117, 2118, 2119, 2120, 2121, 2122, 2123, 2124, 2124.1, 2128, 2129, 2130, 2131, 2133, 2135, 2137.1, 2138 and 2139 may be placed only on or near a non-primary route.
(2) The signs shown in diagrams 2125, 2126, 2126.1, 2127, 2132, 2134, 2136, 2137, 2140, 2322 and 2323 may be placed only on or near a non-primary route, or on a primary route at a junction with a non-primary route.
(3) The signs shown in diagrams 1012.3, 2031, 2201, 2202, 2203, 2204, 2205, 2208, 2209, 2210, 2211, 2212, 2213, 2214, 2215, 2216, 2217, 2218, 2301, 2302, 2303, 2304, 2305, 2306, 2307, 2308.1, 2309.1, 2310.1, 2311.1, 2311.2, 2313.1, 2313.2, 2313.3, 2313.4, 2313.5, 2313.6, 2314.1, 2314.2, 2324, 2325, 2326, 2327, 2328, 2329, 2330, 2401, 2402.1, 2403.1, 2501, 2502, 2504, 2505, 2505.1, 2506, 2507, 2508, 2509.1, 2510, 2511, 2512, 2513, 2601.1, 2601.2, 2602.1,
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