Short, practical notes for the four most-searched states — then the official source, because the handbook is always the final word. Figures below reflect each agency’s published guidance; check the linked official page before your test, as states update requirements.
🌴 California (DMV)
The California knowledge test is drawn from the California Driver Handbook. Applicants under 18 are asked more questions than adults, and the test is famous for detailed questions on signs, distances and DUI penalties. Study the handbook’s numbers carefully, and note California’s strong emphasis on sharing the road with cyclists and on hands-free phone law.
Agency: CA DMV
Official California Driver Handbook →
California DMV website →
⭐ Texas (DPS)
Texas licensing runs through the Department of Public Safety, and the knowledge test is based on the Texas Driver Handbook. First-time applicants aged 18–24 must complete an approved adult driver education course (or take the test at a driver education school). Expect solid coverage of right-of-way, railroad crossings and Texas’s move-over / slow-down law.
Agency: TX DPS
Texas DPS Driver License information →
Official Texas Driver Handbook (PDF) →
🗽 New York (DMV)
New York’s written test is based on the New York State Driver’s Manual and is known for a heavy block of questions on alcohol and drug laws — a section you must take seriously, because NY has historically required a minimum performance on that chapter. There is also strong coverage of signs and of sharing the road in dense urban traffic.
Agency: NY DMV
Official NY Driver’s Manual & practice tests →
New York DMV website →
🍊 Florida (DHSMV)
Florida’s Class E knowledge exam is based on the Official Florida Driver License Handbook and covers road rules and road signs in two parts. New drivers must also complete a state-approved traffic law and substance abuse education course before licensing. Watch for questions on Florida’s school-zone, insurance and implied-consent rules.
Agency: FL DHSMV
Official Florida Driver License Handbook →
Florida DHSMV website →
Studying outside these four states?
The core rules PassDrill drills — signs, right-of-way, following distance, DUI law, defensive habits — are consistent across the United States because they rest on shared traffic-law foundations. State differences live in the numbers: exact speed limits, distances, fees, waiting periods and course requirements. Drill the concepts here, then spend one focused session with your own state’s handbook on its numbers. Every state’s handbook is published free on its licensing agency’s website.
Next step: Take the 10-question test and find out which category is your weak spot — then read the matching guide on the blog.