aprobify.

Topic 3 · Rules of the Road: Traffic Laws in California

A single solid yellow line down the middle of the road tells you:

Why

A single solid yellow line marks the center of a road with two-way traffic. With one lane in your direction and a solid yellow line on your side, passing is not allowed. (Section 6, Lane Markings.)

Practise this in the real format

Reading one answer is not the same as sitting the test. The simulator runs the first-time adult form: 36 questions, 6 mistakes allowed, 83% to pass.

Source: California Driver's Handbook (DL 600, rev. 6/2025), the document the DMV writes the real test from. Edited by Fernando Aguilera. Aprobify is not affiliated with the California DMV.

More from Rules of the Road: Traffic Laws in California

Cookie preferences

Necessary

Required for the site to work: security, load balancing and remembering the choices you make here. These cannot be turned off.

Always

Analytics

Google Analytics 4. Tells us which pages people read and where the study material falls short. We look at it in aggregate, never to identify you.

Advertising

Measuring how well our ads work. We run no advertising tags on this site today; the category exists so that any we add later stays blocked unless you allow it.