Northern
TEA-OCC Test
Count tones. Match symbols. Both at once. — here is everything you need to know about the TEA-OCC Test before your Northern OPC assessment.
Why the TEA-OCC matters for Northern drivers
Northern operates services across Cities and towns across the North of England. Northern is one of the largest train operators in the UK, running hundreds of services daily across the North of England. Train driver recruitment is highly competitive, and candidates must pass the OPC psychometric test battery — including the Vigilance Test and ATAVT — and the TEA-OCC Test is one of the key assessments that determines whether you will be shortlisted for the role.
Regional routes shift between cognitively demanding urban sections and quieter rural stretches. During urban sections, divided attention is critical — signals, pedestrian crossings, station working, and radio communications all require simultaneous processing. The TEA-OCC trains the divided attention capacity that keeps performance consistent across these transitions, particularly when an unexpected event occurs during a multi-task moment.
The TEA-OCC Test forms part of the OPC (Occupational Personality and Cognitive) battery used across all UK train operating companies, governed by RSSB standard RIS-3751-TOM. The format is identical at Northern as at any other operator — but the stakes are specific to this application.
How the TEA-OCC works
Test format & scoring
TEA-OCC Test
Part of the Northern OPC battery
Three parts: (1) Auditory only — count low tones, ignore high. (2) Visual only — click matching symbol pairs in 45 seconds. (3) Combined — both simultaneously. Your Part 3 score is compared against your Part 1 and 2 baselines to measure divided attention capacity.
What it measures: Divided attention — the ability to process two independent information streams simultaneously without degrading performance on either. One of the most safety-critical cognitive capacities for train drivers.
How to prepare
Preparation tips for Northern candidates
Master each part separately before attempting Part 3
Get the auditory count and the visual scan each to near-automatic before combining them. Part 3 is hard enough without simultaneous novelty.
Let the count run in the background
Most people anchor on the visual task and run the count as a background process. Trying to split attention equally typically degrades both.
Use headphones in a quiet environment
The tone discrimination is harder with background noise. Practise in the same quiet, headphones-on conditions you will have during assessment.
Complete multiple full three-part sessions
The divided attention deficit reduces with practice. Track your Part 3 performance across sessions — it should approach your Part 1/2 baselines.
Northern-specific tip
Practise transitioning between focused and divided modes — regional routes require both, and the transitions are where errors occur.
FAQ
TEA-OCC Test — common questions
What are the three parts of the TEA-OCC?
Part 1: auditory only — count low tones, ignore high. Part 2: visual only — click matching symbol pairs in 45 seconds. Part 3: both simultaneously. Part 3 is the core divided attention measure.
How is the TEA-OCC scored?
Each part is scored independently. Part 3 performance is compared against your individual Part 1 and Part 2 baselines, measuring how much (or how little) your performance degrades under dual-task conditions.
Is the TEA-OCC in the standard OPC battery?
The TEA-OCC is an additional assessment used by some operators alongside the standard battery. On Train Driver Tests it is included in the premium plan.
Can divided attention actually improve with practice?
Yes. The divided attention deficit reduces as the individual sub-tasks become more automatic, freeing cognitive capacity. Multiple full sessions show measurable improvement in Part 3 relative to baseline.
Does Northern recruit drivers directly or through agencies?
Northern recruits train drivers directly. Vacancies are listed on the Northern careers page and on jobs.northern-trains.co.uk. The OPC assessment is typically held at one of their training centres.
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