RIMP Spain: the dangerous goods route rules explained

By the MYDG.SHOP Dangerous Goods Team — DGSA-certified

Spain does not let a dangerous goods vehicle take whatever road it likes. There is a designated network — the RIMP, Red de Itinerarios para Mercancías Peligrosas — and where it applies, using it is an obligation rather than a recommendation. The network is republished every year by a Resolution of the Dirección General de Tráfico, and the one in force is the Resolución de 14 de enero de 2026.

It is also one of the most misunderstood rules in European road transport, in a way that costs money in both directions: carriers route around a network that does not bind them, and carriers ignore one that does. This article sets out what the text actually says, quoting it, and then walks through four assumptions that turn out to be wrong.

What triggers the regime — the orange plates, not the cargo

The first thing to get right is who is caught. The Resolution does not address itself to "dangerous goods" in the abstract. Point B.2 of the operative text applies:

"A los vehículos que deban llevar los paneles naranja de señalización de peligro reglamentarios conforme el Acuerdo sobre el transporte internacional de mercancías peligrosas por carretera (ADR):"
— to vehicles that must display the regulatory orange hazard plates under the ADR.

That is the test. Not the UN number, not the class, not whether the load feels hazardous: whether this vehicle, on this journey, must carry the orange plates. Everything else in this article follows from that single sentence, and so does the most common way of getting the answer wrong.

The regime then splits in two. B.2.1 restricts circulation by calendar and road section — specific dates, hours and stretches listed in annex V, and above 7,500 kg of maximum authorised mass, the additional restrictions in annex II on top. B.2.2 is the itinerary obligation, enacted under article 5 of Real Decreto 97/2014. They are separate regimes with separate exemptions, and conflating them is where most of the confusion starts.

Assumption 1: "the RIMP applies to every dangerous goods journey"

It does not. B.2.2 sets out two different rules depending on what kind of journey you are making, and only the second one is the RIMP.

a) Distribution and delivery to final consignees or consumers. Here there is no network. The rule is the most suitable itinerary for road safety and traffic flow, covering "la mínima distancia posible a lo largo de carreteras convencionales" — the shortest possible distance along conventional roads to the delivery point. Bypasses, variants and outer ring roads must be used where they exist — "Deberán utilizarse inexcusablemente las circunvalaciones, variantes o rondas exteriores a las poblaciones si las hubiere" — and where there is more than one, the outermost. You may enter the urban centre only to load and unload, by the access nearest the delivery point, absent justified force majeure.

b) Any other journey. This is where the RIMP bites. If origin and destination both fall inside the network in annex IV, vehicles "deberán utilizarlos obligatoriamente en su recorrido". If one or both fall outside it, you travel by roads that let you join the network at the nearest entry or exit in your direction of travel, so that the distance covered on single-carriageway roads is as short as possible.

A last-mile delivery run and a trunk haul are therefore governed by different sentences of the same provision. Applying the network rule to a delivery round is a common and expensive misreading — as is applying the delivery rule to a long haul.

Assumption 2: "ADR exemptions don't get you out of it"

They do, and the Resolution says so in one line. B.2.2 c):

"Lo dispuesto en los párrafos anteriores, no será de aplicación cuando el transporte de esta clase de mercancías se realice de acuerdo con alguna de las exenciones recogidas en el ADR por razón del cargamento, cantidad o tipo de transporte."
— the preceding paragraphs do not apply where the carriage is performed under one of the exemptions in the ADR by reason of the load, the quantity or the type of transport.

"By reason of the load, the quantity or the type of transport" reaches the exemptions carriers meet every day: carriage within the 1.1.3.6 threshold quantities, limited quantities (LQ) under 3.4, excepted quantities (EQ) under 3.5, and the private-individual and enterprise-ancillary exemptions in 1.1.3.1. Consistently with the orange-plate test in B.2, these are the very cases where the vehicle does not have to display the plates.

So the practical order of work is the reverse of what most people do. Establish first whether the consignment stays within an exemption; only if it does not does the routing question arise at all. If you are working to 1.1.3.6, the free ADR 1.1.3.6 calculator gives you the points calculation, and the ADR substance lookup gives you the transport category and the entry it comes from.

Assumption 3: "annex III is a list of UN numbers"

Annex III is headed Mercancías peligrosas: materias exentas, which invites the assumption that it is a list of substances. It is not. It exempts by use and by destination, and the same UN number can be inside it on one journey and outside it on the next.

It has two levels, and — this is the part that gets missed — they do not exempt you from the same thing.

a) Permanently exempt, with no application needed, from the prohibitions in both B.2.1 and B.2.2, on the outward and return legs of an identical itinerary:

• liquefied gases for domestic use, in cylinders or in tank, whether to distribution points or for delivery to consumers;
• materials for the supply of service stations, including fuels destined for own-consumption centres supplying road transport vehicles;
• fuels destined for ports, airports and seasonal bases of firefighting aircraft, for the purpose of supplying vessels and aircraft;
• fuels for the supply of rail transport, and heating gas oil for domestic use;
• gases needed for the operation of healthcare centres, gases carried to private individuals for home healthcare, and their supply to warehouses where it is evidenced that they are carried to those destinations.

b) Exemptible on special authorisation, applied for and justified — and note carefully what it covers: "de la prohibición a que hace referencia el epígrafe B.2.1". Level b) relieves you of the calendar and road-section restrictions only. It says nothing about the itinerary obligation, which continues to apply.

• products indispensable to the continuous operation of industrial centres;
• products originating in or destined for healthcare centres not covered by a);
• dangerous goods to or from seaports and airports where they unavoidably have to travel on the prohibited dates;
• pyrotechnic material;
• other materials which, in exceptional circumstances, are considered indispensable to carry.

The consequence for anyone building or buying a routing tool is blunt: annex III status cannot be derived from a UN number. Two loads of the same UN1965 may sit on opposite sides of the line depending on where they are going and what they are for. Any tool that tells you "your UN number is exempt" is answering a question the Resolution does not ask.

Assumption 4: "Spain is one authority"

Spain is four, and it shows in the annex itself. Annex IV of the DGT Resolution covers twelve autonomous communities — Andalucía, Aragón, Asturias, Cantabria, Castilla y León, Castilla-La Mancha, Extremadura, Galicia, La Rioja, Madrid, Murcia and the Comunidad Valenciana. Three are absent because they legislate their own networks:

• País Vasco — Resolución de 9 de enero de 2026 of the Dirección de Tráfico, published in the BOE (BOE-A-2026-2625), annex V: 16 stretches.
• Navarra — Resolución 24E/2025, de 31 de diciembre, of the Servicio de Tráfico, published in the BOE (BOE-A-2026-2147), annex V: 10 stretches.
• Cataluña — its own network, the XIMP (Xarxa d'Itineraris per a Mercaderies Perilloses), with an official route calculator at ximp.gencat.cat that issues a binding itinerary valid for one month. For Catalan roads, use the official calculator: it is free, it is authoritative, and nothing built on the outside can match a binding route.

There is a structural quirk worth knowing if you ever try to put the RIMP on a map. The two foral resolutions give kilometre-point intervals — AP-8 · PK 0 (Behobia) / PK 106 (enlace A-8/N-240 El Gallo) — while the DGT annex describes its itineraries by place names, with a single stray PK in the whole annex. The small networks are the geo-referenceable ones; the large national one is not.

Four rules that are in the text and rarely quoted

Using a road outside the network requires 24 hours' notice. Not a form, not a permit desk — advance notification to the traffic control centre, which then decides:

"la previa comunicación con, al menos, veinticuatro horas de antelación al Centro de Gestión de Tráfico de la zona afectada, quien coordinado con el Sector de la Agrupación de Tráfico de la Guardia Civil, confirmará si procede la utilización de la nueva ruta."

And the route must additionally not run through built-up through-roads, or must take the least hazardous of them, judged by traffic intensity, classification and distribution, the size of the urban centre, its layout, and the alignment and regulation of the roads themselves.

You may leave the network by the nearest exit for journeys to or from the driver's habitual residence, to take the daily or weekly rest, to carry out repairs or vehicle maintenance, or to reach the carrier's base — in every case provided the ADR safety and security conditions are met. This is an exit right, not a routing licence.

Above 7,500 kg the regimes stack. B.2.1 applies annex V (section 1, common restrictions, and section 2 epigraph A, specific restrictions), and in addition, once the vehicle exceeds 7,500 kg of maximum authorised mass or maximum combination mass, the restrictions in annex II. Checking one annex and stopping is a partial answer.

Six itineraries are night-only. Marked with an asterisk in annex IV: "solamente se podrá circular entre las 23:00 y 6:00 horas del día siguiente" — circulation permitted only between 23:00 and 06:00 the following day. They are the A-2, A-3, A-4 and A-5 in the Comunidad de Madrid and the corresponding stretches of the A-2 and A-4 in Castilla-La Mancha. It is a genuine restriction attached to specific stretches of the network, not a footnote.

How long the 2026 Resolution lasts

It enters into force eight working days after publication in the BOE and applies throughout 2026. It then remains in force until the 2027 Resolution takes effect — except for the restrictions tied to specific dates, which are those in annexes I, II, V, VI and VIII. In other words the network itself carries over; the calendar does not. That distinction is why a route checked in December can still be right in February while a date checked in December is not.

Checking a road or a route

Our free RIMP route checker holds all 248 itineraries across 14 autonomous communities — the 222 in annex IV of the DGT Resolution, the 16 of the País Vasco and the 10 of Navarra — each line citing the resolution it came from, because they are three different documents. Every one was verified letter by letter against the official PDFs. Catalan roads point you to the XIMP.

What it will not do is decide for you. It tells you whether a road appears in the network and under which resolution, with the date the data was checked printed on the panel itself; whether a particular consignment is caught by the regime at all remains a matter for the consignor and their safety adviser. For the questions in between — which exemption applies, what annex III means for a specific destination — MYDGADR answers on ADR, RID and ADN with the paragraph the answer comes from.

Frequently asked questions

Is the RIMP compulsory?

Where it applies, yes. Under B.2.2 b) of the Resolution, if the origin and destination of the journey both lie within the network in annex IV, the vehicles carrying dangerous goods "deberán utilizarlos obligatoriamente en su recorrido". If one or both lie outside, you must join the network by the nearest entry or exit in your direction of travel.

Does the RIMP apply if I carry under 1.1.3.6 or in limited quantities?

According to B.2.2 c), no: the itinerary rules do not apply where the carriage is performed under an ADR exemption by reason of the load, the quantity or the type of transport. Work out the exemption first — the routing question only arises if the exemption does not hold.

Does the RIMP cover the whole of Spain?

The DGT annex covers twelve autonomous communities. The País Vasco and Navarra publish their own resolutions in the BOE, and Cataluña operates the XIMP with its own official binding route calculator. Four authorities, three published networks and one calculator.

Can I take a road that is not on the network?

Only on the conditions in B.2.2 b): the itinerary must not run through built-up through-roads or must use the least hazardous of them, and you must notify the Centro de Gestión de Tráfico of the area at least 24 hours in advance, which — coordinating with the Guardia Civil traffic unit — confirms whether the new route may be used.

Which text is in force in 2026?

The Resolución de 14 de enero de 2026 of the Dirección General de Tráfico, together with the Resolución de 9 de enero de 2026 of the Dirección de Tráfico of the País Vasco (BOE-A-2026-2625) and the Resolución 24E/2025, de 31 de diciembre, of the Servicio de Tráfico of Navarra (BOE-A-2026-2147). These are annual instruments — confirm the current text before relying on a route.

Routing a dangerous goods movement through Spain? Check the road on the free RIMP route checker, work the threshold on the ADR 1.1.3.6 calculator, or see everything in the free tools hub. For the questions the tools do not answer, contact the MYDG.SHOP team.