Weighbridges & the Law

Who Gets Weighed, and the Evasion Offence

The governing law is the Kenya Roads (KeNHA) General Regulations 2025, made under the Kenya Roads Act (Cap 408), which sit alongside the East African Community Vehicle Load Control framework Kenya operates within. The core mandate: a vehicle with a gross weight above 3,500 kg must submit to weighing at an installed or mobile weighbridge when required (reg. 11, 16(3)) — the 3,500 kg figure being the master threshold.

Weighing isn't optional, and avoiding it is a serious criminal offence under the 2025 Regulations. Under regulation 16(3), a driver of a vehicle over 3,500 kg GVW who bypasses, evades, avoids, absconds or escapes from a weighbridge — whether overloaded or not — commits an offence and is liable, on conviction, to a fine not exceeding KSh 400,000, imprisonment up to two years, or both. And under reg. 16(4), if the vehicle is also overloaded, the owner and driver are additionally charged with overloading under s.58 of the Traffic Act — the two offences stack.

Two related offences the 2025 regs add:

• Plate concealment (reg. 16(5)): failing to display, concealing, or using false number plates — the classic weighbridge-dodging trick — is its own offence, up to KSh 300,000, one year, or both.
• Repeat-offender disqualification (reg. 16(6)): on a second or subsequent bypass conviction, the court must, in addition to the fine, cancel the driving licence and disqualify the offender from holding one for three years.

Kenya's installed weighbridges (2025 Schedule, Part 2 — 36 stations) sit on the freight corridors: Mariakani, Athi River, Gilgil, Webuye, Malaba (A8); Isinya, Juja, Kajiado, Laisamis (A2); Kanyonyo, Yatta, Madogo (A3); Rongo, Awendo, Mukumu, Kapenguria (A1); Busia, Ahero (A12), and many more, a mix of static and virtual scales — positioned so heavy vehicles can't legally route around them. A compliant driver has nothing to fear from the scale; a driver who dodges it faces a KSh 400,000 fine for the dodging alone.

Quick check: Q: A lorry driver, confident the load is legal, takes a side route to skip the weighbridge and save time. Any problem? A: Yes — bypassing, evading or absconding from a weighbridge (over 3,500 kg GVW) is an offence under reg. 16(3), whether or not the load is legal: up to KSh 400,000, two years, or both — and a second such conviction brings a mandatory 3-year disqualification. Compliant vehicles have no reason to skip the scale.

What the Scale Checks, and the Permit You Carry

A weighbridge checks the two independent limits:

1. Gross Vehicle Weight against the vehicle's permitted maximum, and
2. Each axle against the per-axle limit (the EAC framework works around an 8-tonne-per-axle norm, within a 56-tonne GVW ceiling for the largest rigs).

Crucially, and as warned: passing on total GVW does not mean passing — a vehicle within its gross weight but with one axle overloaded (bad distribution, fails. There's typically a small tolerance on axle overload but no tolerance on GVW.

When a vehicle complies with both the legal axle weights and GVW, the authorised officer issues a weighbridge report form and the vehicle proceeds (reg. 18(3)) — the form is proof of a legal load for that leg. Importantly, that report does not exempt the vehicle from being weighed again at any subsequent weighing station on the same journey (reg. 18(3)) — a control against reloading after clearing. The officer also has explicit power to measure and verify the vehicle's dimensions (reg. 17(j)), not just its weight, so an over-length or over-width load is caught at the same stop.

Who Pays: Driver, Owner, Operator

Overloading liability doesn't stop at the driver — the 2025 Regulations are deliberate about this, because the person who loaded the vehicle often isn't the one at the wheel:

• Where a vehicle bypasses the weighbridge and is overloaded, both the owner and the driver are charged with the overloading offence under s.58 of the Traffic Act (reg. 16(4)).
• For an awkward load, both owner and driver must be charged in court under s.58 before any offloading exception applies (reg. 15(1)).
• The driver must follow all lawful instructions of the authorised officer during control measures (reg. 16(2)); failing to do so is a separate offence (reg. 17(2)).

The design intent: charging owners alongside drivers attacks overloading at its source — the commercial decision to load beyond the limit — rather than only penalising the driver executing someone else's instruction. For a driver, the practical protection is refusing to move a load you know is illegal, and the weighbridge report form proving a legal load; for an owner, "the driver did it" is not a defence the regulations recognise — the charge reaches you directly.

Quick check: Q: A driver is caught overloaded but says the depot loaded the truck against his objection. Who's liable? A: Both — under the 2025 Regulations the owner and driver are charged together for overloading (reg. 16(4)); the law deliberately reaches the ownership that controls the loading decision, not just the person driving. The driver's protections are the weighbridge report form and declining to move a knowingly illegal load.

The Penalties (2025 Regulations)

The 2025 Regulations run on criminal fines, not the fee-and-detention schedule of the old (revoked) 2013 instrument. The structure a driver or owner actually faces:

• Overloading itself — driving a vehicle over the permitted weight limit is an offence carrying, on conviction, a fine up to KSh 200,000, imprisonment up to one year, or both (reg. 12(3), aligning with s.58 of the Traffic Act and Rule 41). Where the load is overloaded and the vehicle bypassed the weighbridge, the two charges stack (reg. 16(4)).
• Contravening the Regulations generally, or breaching a special-permit condition, or forging/defacing a permit — a fine up to KSh 400,000 (reg. 12(3), first limb).
• Bypassing the weighbridge (reg. 16(3)) — up to KSh 400,000, two years, or both, as above, plus 3-year disqualification on repeat.
• Concealing/false plates (reg. 16(5)) — up to KSh 300,000, one year, or both.
• Ignoring an authorised officer's lawful order (reg. 17(2)) — a fine up to KSh 100,000 or three months.
• Damaging a weighbridge or road infrastructure (reg. 14(5)) — up to KSh 400,000, two years, or both — and the owner separately pays the full cost of repair (7.4.4a below).

7.4.4a — Damage costs are separate, and large. Beyond any fine, an owner whose overload damages a road structure pays to make it good at rates set in the 2025 Schedule (Part IV / reg. 22) — for example, reinforced-concrete bridge repair at KSh 1,960,000 per cubic metre of specialist grout, steel bridge components at KSh 250,000 per tonne, crash barriers at KSh 15,000 per metre. These are civil restoration costs on top of the criminal fine, and they can dwarf it — which is the real deterrent: an overloaded axle that cracks a bridge deck generates a bill measured in millions.

The teaching point isn't any single figure (fines are re-gazetted — the whole regime changed between 2013 and 2025) but the shape: overloading and weighbridge-dodging are now criminal offences with six-figure fines, prison exposure, licence loss on repeat, and uncapped road-damage liability on top. It is engineered to cost far more than the extra cargo is worth — by design.

What Happens to an Overloaded Vehicle

Being caught overloaded doesn't just generate a fine — the vehicle doesn't simply drive on. Under the 2025 Regulations (reg. 15–16):

• Redistribution or offloading is mandatory. No overloaded vehicle — except an awkward load under special safety precautions — is released back onto the road until the excess is offloaded or redistributed and the vehicle re-weighed within the legal limit (reg. 15(2)). You cannot pay the fine and continue carrying the excess; the excess comes off.
• Awkward loads (unstable but divisible — bitumen, gases, perishables) may not be offloaded at the station unless special legal and safety precautions are taken, and both owner and driver must have been charged in court under s.58 of the Traffic Act first (reg. 15(1)).
• Awkward load proceeding under the old surcharge: a driver of an awkward load that can't meet the offloading safety precautions but wants to continue pays, in addition to the overload fine under Rule 41, four times the assessed fine for the remaining part of the journey (reg. 15(3)).
• Officer's instructions are binding (reg. 16(2)) — the driver must follow all lawful instructions of the authorised officer during control measures; ignoring them is the reg. 17(2) offence (KSh 100,000 / 3 months).

Note what's gone from the old 2013 regime: the "3 days free then KSh 2,000/day detention" charge and the "auction after 90 days" provision were part of LN 86/2013, which the 2025 Regulations revoked (reg. 24). The 2025 approach is offload-and-charge rather than detain-and-auction.

The practical reality for an operator is unchanged in spirit, though: a caught overload means the excess cargo comes off on the spot, a court charge for the driver and owner, and a delayed, part-offloaded delivery — a true cost that dwarfs any single fine, which is exactly the deterrent intended.

When the Load Is Legitimately Huge: Special Permits

Not every over sized load is an offence — some cargo is simply, unavoidably large, and the regulation provides a legal route for it. This is worth knowing because it's the difference between an illegal overload and a permitted abnormal load.

The regulation defines a ladder of over sized cargo:

• An awkward load is divisible but hard to handle — bitumen, gases, perishables. Not abnormal, but special safety precautions apply before offloading (7.4.5).
• An abnormal load is indivisible and extraordinarily large, exceeding the legal weight or dimensional limits — it needs a special permit to travel at all.
• A super load is extraordinarily large and indivisible with special route requirements — giant cranes, large prefabricated structures.

To move an abnormal load legally, the owner must obtain a special permit (reg. 13–14), which under the 2025 Regulations requires: presenting the vehicle and load to be weighed at the nearest station before the journey; providing owner's and police escorts as determined; using warning lights and red conspicuous markers; submitting a schedule of travel; submitting a route survey report detailing width and height barriers along the route; giving the public at least 7 days' notice in a national newspaper of the dates and roads; and paying the permit fee (Schedule Part 1E). Those fees: KSh 5,000 for oversize loads up to 25,000 kg, KSh 10,000 up to 50,000 kg, and KSh 250,000 exceeding 50,000 kg — plus separate charges for exceeding maximum width (2.65 m — KSh 5,000), height (4.20 m — KSh 10,000), rigid length (12.5 m — KSh 15,000), articulated length (17.4 m — KSh 20,000), or combination length (22 m — KSh 25,000). If an abnormal load damages a road structure en route, the owner is liable for the damage cost (reg. 14(4)).

The takeaway for a general driver: the giant indivisible loads you occasionally see under police escort with flashing lights and "ABNORMAL LOAD" signage aren't flouting the weight rules — they're operating under a permit that the rules specifically provide for. The system isn't "no big loads ever"; it's "big loads only with weighing, escort, marking, timing, and liability for any damage."

Quick check: Q: A transformer too large to divide must be moved on a road. Is this automatically an illegal overload? A: No — an indivisible, extraordinarily large load is an abnormal load, movable under a special permit (reg. 13–14) requiring pre-journey weighing, owner and police escorts, warning lights and red markers, a travel schedule, a route survey, 7 days' public notice, the permit fee, and owner liability for any road damage. Legal size limits have a permitted exception; illegal overloading of divisible cargo does not.