These signs indicate a mandatory traffic rule. Its nomenclature and meaning are the following:

 

R-400 a, b, c, d and e. Mandatory direction. The arrow indicates the direction and sense that the vehicles are obliged to follow.

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R-401 a, b and c. Mandatory way. The arrow points to the side or sides through which vehicles must pass.

 

 

R-402. Intersection of rotary-compulsory direction. The arrows indicate the direction of the rotating movement that the vehicles must follow.

 

R-403 a, b and c. One-way directions and senses allowed. The arrows indicate the only directions that vehicles can take.

 

R-404. Lane for vehicles, except motorcycles without sidecar. Obligation for drivers of vehicles, except motorcycles, to drive on the lane designated for them.

 

R-405. Roadway for motorcycles without sidecar. Obligation for motorcycle drivers to drive on the lane designated for them.

 

R-406. Lane for trucks and vans. Obligation for drivers of all types of trucks and vans, regardless of their mass, to drive on the road designated for them. The registration of a tonnage figure, either on the silhouette of the vehicle, or on another supplementary plate, means that the obligation only applies when the maximum authorized mass of the vehicle or of the set of vehicles exceeds the aforementioned figure.

 

R-407 a. Lane reserved for cycles or cyclists. Obligation for riders of cycles to drive on the road designated for them and prohibits other road users from using it.

 

R-407 b. Lane reserved for mopeds. Obligation for drivers of mopeds to drive on the road designated for them and prohibits other users from using it.

 

R-408. Lane for animal-drawn vehicles. Obligation for drivers of animal-drawn vehicles to use the road designated for them.

 

R-409. Lane reserved for animals of saddle. Obligation for riders to use the path to which they are placed with their saddle animals and prohibit other users from using it.

 

R-410. Path reserved for pedestrians. Obligation for pedestrians to walk on the path designated for them and prohibits other road users from using it.

 

R-411. Minimum speed. Obligation for drivers of vehicles to drive at least at the speed indicated by the figure, in kilometres per hour, included in the sign, from the place where it is located to another of different minimum speed, or end of minimum speed or maximum speed of equal or less value.

 

R-412. Snow chains. Obligation not to continue driving without snow chains or other authorised devices, with one on at least one wheel on each side of the same axle.

 

When you see this sign you should know that if you continue without using them you could be sanctioned.

 

When the roads are not passable because of snow or ice, the traffic agents are responsible for activating / installing the R-412 signals. You must pay attention when you see it and if you do not have chains, wait in a safe area off the road or turn around.

 

R-413. Short-range lighting. Obligation for drivers to drive with at least short-range lighting (headlights) regardless of the conditions of visibility and lighting of the road, from the place where the sign is located to another end of this obligation.

R-414. Lane for vehicles transporting dangerous goods. Obligation for drivers of all kinds of vehicles that transport dangerous goods to drive on the road to whose entrance is located and that must drive in accordance with its special regulations.

 

R-415. Lane for vehicles that transport water polluting products. Obligation for drivers of all kinds of vehicles that transport more than 1,000 litres of products capable of contaminating water of driving on the designated for them.

 

R-416. Lane for vehicles that transport explosive and flammable goods. Obligation for drivers of all types of vehicles that transport explosive or easily flammable goods to drive along the lane designated for them and on which must drive in accordance with their special regulations.

 

R-417. Mandatory use of seat belts. Obligation to use the seat belt.

 

R-418. Exclusive route for vehicles equipped with operational electronic toll collection equipment. Mandatory electronic toll collection. Obligation to pay the toll through the dynamic toll system or toll collection; the vehicle that drives in the lane or lanes thus signalled shall be provided with the technical means that enable its use under operating conditions in accordance with the legal provisions in the matter.