Heavy haulage escort: when attendants and escort vehicles are needed, and how to plan them

A heavy haulage escort is not one single legal requirement. In Great Britain the law distinguishes between an attendant, who is required once a vehicle or load passes certain width, length or projection limits, and an escort vehicle. Under STGO an escort vehicle is not mandatory by law, but the police can insist on one. Other countries, Romania among them, use different thresholds and also involve police crews. The size of the load, the route and every country crossed therefore decide what escort an abnormal load needs. This guide sets out what the official sources say, who does what on the road, and which factors drive the cost.

Attendant or escort vehicle: the distinction that matters in Great Britain

In Great Britain, vehicles that do not meet the Construction and Use (C&U) and Authorised Weight (AW) Regulations can still run under the Road Vehicles (Authorisation of Special Types) (General) Order 2003, known as STGO. ^[1] The DVSA enforcement guide on special types applies to England, Scotland and Wales. ^[1] STGO deals with attendants in a schedule of their own, Schedule 6. ^[2]

When an attendant is required

According to the DVSA guide, an attendant is required where: ^[3]

• the vehicle width exceeds 3.5 metres;
• the rigid length, excluding the drawing vehicle, exceeds 18.75 metres;
• the total length exceeds 25.9 metres;
• projections exceed 2 metres at the front or 3.05 metres at the rear.

Above 5 metres of load width, including projections, a VR1 permit (Secretary of State approval) is also needed, together with 2 days' notice to the police and an attendant. ^[4] Loads that stay within C&U but overhang the sides can also need an attendant. For example, an overall width of more than 3.5 m and up to 4.3 m requires one, as well as police notice and marker boards. ^[5]

Where the attendant travels

The attendant can ride in the abnormal load vehicle itself. Alternatively, they can travel in an escort vehicle, provided they stay in radio contact with the load vehicle and can see it during the journey as far as reasonably practical. ^[3] When 3 or more loads travel in convoy, only the first and last vehicles need an attendant. ^[3]

Escort vehicles: not mandatory by law, but often required in practice

No law requires a vehicle moving under STGO or a Special Order to be accompanied by an escort vehicle, but the police can make sure one is used when necessary. ^[3] National Highways, various local councils and police forces publish codes of practice on escorts. ^[6] A planner should read these codes for the authorities on the route instead of assuming that a single national standard applies.

An escort vehicle does not relieve the driver of visibility duties. Drivers must have a clear view regardless of whether an escort vehicle is present. ^[7] Where drivers lack a clear view, the guide says this may be allowed if an additional rear-steer driver is present or the vehicle is under police escort; check the current guide for the exact conditions. ^[7]

The escort vehicle itself is checked too

Escort vehicles converted with welfare facilities sometimes have the bulkhead between the cab and the rear removed. If the vehicle is classed as a van, it must have a bulkhead fitted. ^[6] If it is classed as a motorhome, no bulkhead is needed, but the operator must demonstrate that the vehicle is a motorhome. ^[6]

Notifications frame the escort plan

Escort and attendant decisions sit alongside notifications to the authorities. Vehicles above 150,000 kg gross weight, 16,500 kg axle weight or 6.1 metres width when loaded need a special order. ^[4] Such moves require 5 working days' notice to highway and bridge authorities and 2 working days' notice to the police. ^[4]

Enlarge

One point matters a great deal to anyone buying abnormal load transport through an intermediary. The notice given to the authorities is operator specific, and the movement cannot be sub-contracted without the consent of the relevant authority. ^[6] Changing the haulier at the last minute is therefore not a simple swap.

Speeds affect escort hours directly. For STGO Category 2 abnormal indivisible load vehicles, for example, the guide lists 40 mph on motorways, 35 mph on dual carriageways and 30 mph on other roads. ^[1]

If the load continues into the EU: Romania as an example

For moves between Romania and Great Britain, GB rules end at the GB border. Each country on the route applies its own escort regime. In Romania, escorting ("însoțire") is carried out by authorised specialised operators, using authorised escort vehicles and certified specialised persons. ^[8] The Romanian Norms approved by Order 1.236/6.509/126/2018 (art. 46) set the following thresholds, among others:

Enlarge

Escort level in Romania	Examples of triggering conditions (at least one)
One authorised escort vehicle in front	width over 3.2 m up to 4.5 m; length over 25 m up to 30 m; height over 4.5 m; total mass over 80 t
Two authorised escort vehicles, one in front and one behind	width over 4.5 m; length over 30 m
Additional traffic police crew	width over 5.0 m; length over 40 m; height over 5.0 m; total mass over 80 t

The thresholds above are taken from art. 46 of the Norms. ^[9] On motorways, for the width and length cases that need a single escort, that escort vehicle travels behind the load. ^[9] Each escort vehicle must carry at least one specialised person throughout the movement. When two take part, the person in the leading escort vehicle acts as coordinator. ^[9]

Convoys are also regulated at law level. Since the amendment of Government Ordinance 43/1997 by Ordinance 15/2025, a convoy may have at most 3 vehicles and may not exceed 200 metres. ^[10] It must be escorted by authorised escort vehicles in front of and behind each vehicle in the convoy, plus a traffic police crew. ^[10] For the transit countries in between, check the requirements with each competent authority.

Who does what in an escorted move

• Haulier (operator): holds the permit or notification, plans the route and secures the load. The DVSA guide expects a separate plan for every abnormal load movement. ^[7]
• Attendant / escort crew: in Romania, the specialised person checks that the special transport authorisation (AST) exists and is complied with. They also check the dimensions of the load and visually inspect its securing at departure and en route. ^[9]
• Driver: Romanian training for oversized transport drivers includes convoy driving and communication with escort crews. ^[11]
• Police: in Romania, where a police escort is required, the operator agrees a staged transport programme with the traffic police. ^[9]
• Freight forwarder: gathers accurate data from the shipper, selects partner carriers that hold the necessary authorisations, and coordinates loading windows, documents and communication.

Enlarge

What drives the cost of a heavy haulage escort

There is no standard price, because the escort is built around the load. The main factors are:

• Dimensions and mass: each threshold crossed can add an attendant, a second escort vehicle or a police crew.
• Number of countries: each one has its own escort rules and permits. In Romania, for example, the permit charges for exceeded dimensions add up when more than one dimension is exceeded. ^[12]
• Distance and speed: lower speed limits for heavier categories mean more escort hours.
• Notice periods and staged programmes: these can fix the dates and times the load may move, and so affect waiting time.
• Convoys: grouping several loads changes the attendant and escort requirements.
• Return legs and repositioning of escort vehicles and crews.

For broader context, see our guide to shipping oversized goods, the article on technical requirements for oversized freight transport and our notes on choosing a road route. To see which trailers are typically used, look at the low-bed low loader page.

How HONEXPRES organises escorted moves

HONEXPRES is a freight forwarder based in Oradea, Romania. We do not run our own trucks or escort vehicles. Through our oversized transport service, we arrange abnormal load moves with partner carriers and specialised escort operators. We start from your exact dimensions, weights, loading and unloading points, and check which escort and permit requirements apply in each country. For plant and equipment, see also machinery transport.

FAQ

Is an escort vehicle mandatory for abnormal loads in Great Britain?

Not by law under STGO or a Special Order, but the police can require one when necessary. ^[3] An attendant, on the other hand, is required above the thresholds listed in the DVSA guide. ^[3]

Can the attendant ride in the escort vehicle?

Yes, provided they are in radio contact with the load vehicle and can see it during the journey as far as reasonably practical. ^[3]

What is a pilot vehicle for an abnormal load?

It is another name for an escort vehicle that travels ahead of or behind the load. Which one is needed, and where it must travel, depends on the country. Romania, for example, specifies front and rear positions by threshold. ^[9]

Can the haulier hand the move over to another carrier?

In Great Britain the notice is operator specific. The move cannot be sub-contracted without the consent of the relevant authority. ^[6]

Do the same rules apply in every European country?

No. Thresholds and the involvement of the police differ, so check each country on the route with its competent authority.

Request a quote for your abnormal load

Send us the load dimensions and weight, a drawing or photos, and the route. We will organise an offer with partner carriers, escort arrangements included. You can request a quote here, or read first what information a good quote request contains.

Official sources consulted

• [1] DVSA, Special types enforcement guide (updated 27 September 2018), section 1. Introduction
• [2] Road Vehicles (Authorisation of Special Types) (General) Order 2003, Schedule 6 Attendants (table of contents)
• [3] DVSA, Special types enforcement guide, section 8. Attendants and escort vehicles
• [4] DVSA, Special types enforcement guide, section 5.2 Over-width projections
• [5] DVSA, Special types enforcement guide, Annex A, section 12.2 Loads overhanging the sides of the vehicle (C&U Regulations 1986, reg. 82)
• [6] DVSA, Special types enforcement guide, section 8.1 Escort vehicles
• [7] DVSA, Special types enforcement guide, section 1.9 Drivers view to the rear mirrors
• [8] Romanian Norms approved by Order 1.236/6.509/126/2018, art. 2 point 10 (definition of escorting)
• [9] Romanian Norms approved by Order 1.236/6.509/126/2018, art. 46 para. (1) Escorting of vehicles with exceedances
• [10] Government Ordinance 15/2025 amending Government Ordinance 43/1997 on the road regime, art. I point 3 (art. 41 para. (27) of OG 43/1997)
• [11] Order 1.214/2015, Annex 5a) Training programme for the oversized transport certificate (safe driving)
• [12] Order 1.836/2018 (additional road-use tariffs), Part 2, letter H) point 2

Send us the dimensions, weight and route of your abnormal load and we will organise a quote with partner carriers, including the escort arrangements.