One-way roads: route planning without direction mistakes

Read direction before distance

When a one-way road is involved, direction comes before convenience. If the road does not permit travel in the direction you need, choose the next sensible connection rather than trying to force the route through.

Check the approach as well as the road

A correct one-way direction does not automatically mean the turn into it is sensible. Look at the junction and the way your route approaches it.

Watch clusters of one-way streets

Central London can present several one-way roads together. In those areas, zoom in and plan a short sequence ahead instead of deciding one click at a time with no idea where the next road leads.

Use route feedback as a diagnosis

If an attempt follows the right general corridor but progresses backwards or diverges around a one-way cluster, review the sequence rather than simply trying to draw closer to the answer line.

Common mistakes when working on one-way direction

A common mistake is trying to solve one-way direction 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 one-way direction, 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 checking entry, travel direction and exit together. 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 one-way direction

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 direction-heavy exercises. 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