Strange Road Signs

[Mike_P]

If a road (ignoring motorways) is neither 30 in a built up area or 60 / 70 (dual carriageway) outside of a built up area it should have small repeater speed signs. Presumably their isn't any set requirement for their spacing.

 

[mjr]

If a road (ignoring motorways) is neither 30 in a built up area or 60 / 70 (dual carriageway) outside of a built up area it should have small repeater speed signs. Presumably their isn't any set requirement for their spacing.

There is no requirement for repeater signs at all, nor a required spacing. The Traffic Signs Manual Chapter 3 section 8.3 recommends 200m spacing for 20mph, 250 for 30 (unlit), 300 for 40, 450 for 50, 500 for 60 and 600 for lit national speed limit dual carriageway. In practice, you'll find many highways departments treat that as if it was required, including putting up posts that they often refuse to install for cycle route direction signs!

 

[scragend]

If a road (ignoring motorways) is neither 30 in a built up area or 60 / 70 (dual carriageway) outside of a built up area it should have small repeater speed signs. Presumably their isn't any set requirement for their spacing.

I read that and thought "there must be, there are regulations for everything". Whether they are stuck to or not, is another matter...

Turns out there are recommended, but not mandatory, maximum distances for the spacing of repeater signs:

https://assets.publishing.service.g...ebfec719b/traffic-signs-manual-chapter-03.pdf

8.3 Repeater signs indicating maximum and national speed limits
8.3.1.  Whilst there is no specific requirement to provide repeater signs, it is for the traffic authority to determine how many are required and where they are placed. However, to ensure that drivers are fully aware of the speed limit in force it is recommended that repeater signs are provided at the intervals shown in Table 8-4 (see 8.3.4). Schedule 10 General Direction 2 prohibits the use of 30 mph repeater signs where a road has a system of carriageway lighting. Section 82 of the Road Traffic Regulation Act 1984 defines a lit road as being a “restricted road” (see 8.1.2). Section 81 specifies that the speed limit along such a road is 30 mph unless an order has been made to impose another limit and remove the restricted road status. The presence of carriageway lighting therefore means that a road automatically has a speed limit of 30 mph with the lamps taking the place of repeater signs. It is therefore important that, when lit roads have a speed limit other than 30 mph, repeater signs are provided at adequate intervals along the road as recommended in Table 8-4. Failure to do so could undermine confidence in the signing of all speed limits, as drivers have only the repeaters to tell them that the limit is not 30 mph. Where a speed limit, other than 30 mph, applies before and after the point where the carriageway lighting begins, a repeater sign should be placed in line with the first lamp; in most cases the sign would be mounted on the lighting column.