Your free exercise
The free route uses the same practice interface as the Pro route bank. Click the green START marker, plot the route yourself, reach FINISH and submit. There is no preview line showing where to go next.
What the closure changes
Cassland Road is unavailable for the exercise, so the task is to find a sensible direct route that avoids the closure rather than simply following the most obvious unrestricted path. This makes the free route useful for testing both the map interface and your route-planning approach.
What happens after the attempt
After your first submitted free attempt, further route practice is part of PCO Topography Pro. You can still review the public guides and training information before deciding whether to purchase.
Common mistakes when working on the free Cassland Road exercise
A common mistake is trying to solve the free Cassland Road exercise too quickly. Candidates can recognise the general area yet miss the first important restriction or connection. Slow the decision down long enough to explain why the first road choice works. That small pause is usually cheaper than repairing several later turns after the route has already moved away from the best corridor.
Another mistake is treating every visible difference from the accepted line as the same problem. With the free Cassland Road exercise, the useful question is whether the road sequence is wrong or the drawing is merely imprecise. PCO Topography separates those signals so you can prioritise planning a closure detour without seeing the accepted answer. A route-choice correction should come before cosmetic line placement.
Finally, avoid memorising the shape of one map. Repeat the underlying decision on a different exercise. If you can explain the rule and apply it elsewhere, the skill is becoming transferable. That is why the route bank combines focused practice with full routes rather than asking you to repeat one screenshot until it looks familiar.
A practical study drill for the free Cassland Road exercise
Use a three-pass drill. On pass one, inspect the map without plotting and say the likely corridor aloud or write it down. On pass two, plot and submit normally. On pass three, review the first meaningful divergence from the accepted model and state the reason for it in one sentence. This keeps the session focused on decisions instead of random repetition.
For the next attempt, change only the behaviour that caused the main error. If the issue was direction, check arrows earlier. If it was a structure, verify the actual connection. If it was road position, keep the same route choice and place the line more carefully. This controlled correction makes score changes easier to interpret.
Finish by transferring the skill into one careful submitted attempt. Do not require a perfect score before progressing; require that you can identify what you did, why it was correct or incorrect, and what you would check on an unfamiliar map. That is a stronger preparation habit than simply accumulating completed route numbers.
- Scan before clicking
- Choose the corridor
- Check direction and restrictions
- Plot meaningful junction points
- Submit without revealing the answer
- Review the first major divergence
- Repeat the same skill on a different route
PCO Topography is an independent training resource. TfL assessment requirements, fees, venues and licensing processes can change. Check Transport for London for current official information before booking or attending.
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