Did Labour check the law?

Labour have been so busy printing up their stop asset sales signs, that I wonder if they have bothered to check the law.  You can see them all planted here next to the road, in the Hutt.

However, the problem for Labour is that displaying something that looks like a road sign, near a road, is an offence punishable by a $150 instant infringement notice with a potential fine of up to $1000.

So what does the law say?

We have a law called Land Transport Rule: Traffic Control Devices 2004 and Rule 3.2(5)(a) appears most relevant:

3.2(5) A person must not install on a road, or in or on a place visible from a road, a sign, device or object that is not a traffic control device, but that:
(a) may be mistaken for a traffic control device

http://www.nzta.govt.nz/resources/traffic-control-devices-manual/docs/draft-tcd-traffic-signs.pdf

It is covered again at Rule 13.7

13.7 Responsibilities of all persons
A person must not:
(a) unless that person is a member of the New Zealand Police, or is authorised by a road controlling authority or the [Agency], install, modify, remove or obscure a traffic control device;
(b) damage or otherwise interfere with a traffic control device;
(c) mark or install, or allow to be marked or installed, on a road, or in or on a place that is visible from a road, a sign, device or object that appears to be a traffic control device but is not;
(d) install a traffic control device that bears a logo, monogram, sign of sponsorship, sign indicating an association with a business, or any information other than that specified in this rule;

Also we have the NZTA Trafiic control devices manual. They even use a non authorised stop sign as an example of an illegal sign. Compare their example below with Labour’s signs.

I think it is a pretty clear cut case. So will Labour say the law doesn’t apply to them, or will they change their advertisements?