There is no way the total cost of that trial roadway was only 150,000 euro. This is local government job, lots of 'experts' are involved. A basic kids playground costs almost that much (not including the land) when finished and fully costed. You have town planers, architects, health and safety, drainage, electrical supply, street lighting, websites etc. All this before they even brake ground.
Frank, ask them for a full breakdown of the costs to fully replace a set of traffic lights with pedestrian crossing at a standard 4 way junction.