Driver's License Test Prep
Oregon Practice Warning Signs

A yellow diamond sign shows a vertical line with a smaller horizontal line extending to the right at a right angle. What does this sign warn of?

  1. A.
    A T-intersection ahead with side traffic Correct
  2. B.
    A road merges into yours from the right
  3. C.
    The road ahead splits into two one-way roads
  4. D.
    A four-way intersection is ahead with cross-traffic
The Why

The answer is "A T-intersection ahead with side traffic"

This is the Side Road warning sign. It tells you a T-intersection is ahead, and traffic may enter the road from the left or right (the sign is mirrored to match which side the road joins from). It is distinct from the Crossroad sign (a plus symbol for a four-way intersection) and the Merge sign (a single road joining yours at an angle from one side rather than meeting it at a right angle). Match the sign to the intersection geometry: a right-angle branch means a side road, a plus means a crossroad, and an angled join means a merge.

Why the others miss

The traps in the wrong answers

B. A road merges into yours from the right

A road merging from one side is shown by the Merge sign, not the Side Road sign. Misreading: Confuses the Side Road sign with the Merge sign, which the manual describes as traffic merging from the side shown.

C. The road ahead splits into two one-way roads

There is no warning sign in this category for a road splitting into two one-way roads. Misreading: Invents a warning category not listed in the manual; no Oregon warning sign depicts a road splitting into two one-way roads.

D. A four-way intersection is ahead with cross-traffic

A four-way intersection is shown by the Crossroad sign with a plus symbol. Misreading: Confuses the Side Road (T) sign with the Crossroad sign, which the manual says warns that a four-way intersection is ahead and cross-traffic may enter.

The Rule

This question tests your knowledge of Warning Signs in Oregon. Source: Oregon Driver Manual, "Warning Signs," p.11..

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