Question juridique clé
Whether the roadside signalisation was unlawful or required an expert opinion
Solution extraite
The signalisation was sufficiently lawful and no expert opinion was needed; the challenge was rejected.
Motifs extraits
Even if the sign had been shifted, the relocation was linked to expansion of the settled area. In any event, road users must generally comply with traffic signs, including even unlawfully posted ones when they create a protected appearance.