The liveried 4x4 behind your truck on the motorway says “Traffic Officer”, not “Police” - and most drivers are genuinely unsure what that means. Can it stop you? Must you obey it? Is this a ticket? The answers come from the Traffic Management Act 2004, and they matter every day on England’s motorways and major A-roads, where National Highways’ traffic officers patrol around the clock as the frontline of keeping the network safe.
National Highways is the government company that plans, builds, operates and maintains England’s strategic road network - the motorways and major A-roads. Its traffic officers patrol those roads 24/7. National Highways is careful about the boundary of its own role: its officers have powers to stop traffic so that incidents can be safely dealt with, and they sometimes pass evidence to the police when they witness dangerous driving or other offences - but, in its own words, it is not an enforcement organisation. They manage the road; the police police it.
The Traffic Management Act 2004 gives traffic officers real legal authority, and section 6 is the heart of it. An officer engaged in the regulation of traffic can direct a person driving or propelling a vehicle to stop, or to follow a direction - and the same power covers traffic surveys and directing pedestrians to stop. The Act then wires these powers into the existing traffic-law machinery: section 163 of the Road Traffic Act 1988 - the power to stop vehicles - was amended so it applies to a traffic officer alongside a constable in uniform.
The critical part for drivers is the compliance obligation. The 2004 Act amended Schedule 2 to the Road Traffic Offenders Act 1988 so that the offence attached to section 35 of the Road Traffic Act 1988 - failing to comply with the traffic directions of a constable - also covers traffic officers. In plain English: ignoring a traffic officer’s lawful direction is an offence, just as ignoring a police officer’s direction would be. The rolled-up car window and the “you’re not real police” routine are not a legal position; they are an offence in progress.
Section 7 adds a second authority that drivers encounter without realising its source: traffic officers hold the same power as a constable under section 67(1) of the Road Traffic Regulation Act 1984 to place and temporarily maintain traffic signs on a road in emergencies and around temporary obstructions. The cones, signs and lane closures that appear around a stranded vehicle or a spill are not informal suggestions - they are placed under statutory power, and driving through them is treated accordingly.
The limits matter as much as the powers. Traffic officers operate under direction themselves: the Act requires them to comply with any direction of a constable when carrying out their duties, and with directions of the appropriate national authority. They are not police officers, they do not carry police powers of arrest or investigation, and they do not issue fixed penalties or points. What they do - and National Highways says it openly - is pass evidence to the police when they witness dangerous driving or other offences. The traffic officer who watches a truck weave through their closure cannot ticket it, but the conversation between their evidence and a traffic car is a short one.
For professional drivers, the rules of engagement are simple. Treat a traffic officer’s directions exactly as you would a police officer’s - the law does. Comply with signs and closures they place; they carry statutory authority. Expect their presence at incidents, breakdowns and obstructions, where their job is to keep the scene safe and the network moving - helping them do that job usually helps you too, because the stranded vehicle they are protecting may be yours.
And brief drivers on the evidence point: traffic officers are professional witnesses with radios and cameras, working for the organisation that runs the road. A driver who abuses one, or barges through their traffic management, is creating evidence that will reach people with blue lights remarkably fast.
The motorway network is where fleet exposure concentrates: the highest speeds, the hardest shoulders, the most complex traffic management. Traffic officers are the human layer of that system, and a fleet whose drivers understand their powers has smoother incidents, fewer offence referrals, and better outcomes on the worst days - the breakdown in lane three, the post-collision scene, the spilled load. The 2004 Act gave them the authority. Two decades on, the only surprise left is how many drivers still don’t know it.