Pavement markings encode two independent facts:
- Color separates directions of travel: yellow = traffic on your left has the opposing flow (or the line separates opposing directions); white = same-direction traffic only.
- Pattern governs crossing: dashed = pass/merge freely when safe; solid = crossing is discouraged; double solid = never cross.
Every written test leans on this grid. Learn it once and most marking questions answer themselves.
| Marking | Meaning |
|---|
| Broken yellow | Passing allowed from your side when safe |
| Solid + broken yellow | Pass only from the broken side |
| Double solid yellow | No passing either direction; left turns across are still legal |
The double-solid nuance is the classic trap: you may not pass across double yellows, but you may turn left into a driveway or intersection across them. Only a painted median or a physical barrier changes that.
| Marking | Meaning |
|---|
| Broken white | Lane changes allowed |
| Solid white | Lane changes discouraged (approaches, tunnel lanes, fog lines) |
| Double solid white | Do not change lanes (tunnels, bridge approaches) |
| Dotted (short) white | Lane extension through an intersection, follow it |
Solid white fog lines mark the road’s right edge; solid yellow marks the left edge on divided roads. Edge-line color is a quick test question.
- Reversible lanes: marked by a double-broken yellow or a lane with overhead signals, direction follows the signal, not habit.
- Center turn lane (solid-and-dashed yellow both sides): a shared left-turn pocket. Enter no more than ~200 feet before your turn, wait inside the lines, never use it for passing.
- Bike lanes: solid white boundary; cars must yield when merging across or turning through; broken sections mark merge zones.
- Continental (ladder) crosswalks: wide bars, the most visible style, used at uncontrolled crossings.
- Transverse (two solid lines): the classic minimal crosswalk.
- Stop before the stop line, not the crosswalk, the line sits 4+ feet back to keep your bumper out of the pedestrian zone.
- Yield lines (white triangles) at roundabouts and yield points: the point of no decision, slow and yield before them.
The pavement X with “RR” marks the approach. Rules: stop within 15-50 feet when gates or flashers are active; never stop on the tracks; a full stop is legally required for school buses and hazmat vehicles at every crossing, marked or not. Tests frequently pair this with the round yellow advance-warning sign.
| Curb | Meaning |
|---|
| White | Short loading, passenger pickup |
| Yellow | Loading zone, freight/passengers, limited time |
| Red | No stopping, standing, or parking |
| Green | Time-limited parking per sign |
| Blue | Disabled-parking permit holders only |
- Color/pattern grid questions (pass or not across this line?).
- The double-yellow left-turn exception.
- Center-turn-lane length and use rules.
- Stop-line vs crosswalk position.
- Curb color meanings (urban states especially).
| Question pattern | Answer |
|---|
| Double solid yellow | No passing; left turns OK |
| Solid with your side broken | You may pass |
| Solid white between lanes | Stay in lane |
| Yellow X pavement | Railroad approach |
| Triangular white lines | Yield line, yield before it |
| Blue curb | Disabled permit parking |
| Marking | Meaning |
|---|
| Broken yellow center | Passing allowed from your side |
| Solid-and-broken yellow | Pass from broken side only |
| Double solid yellow | No passing; left turns legal |
| Broken white | Lane changes allowed |
| Solid white | Stay in lane |
| Double solid white | No lane change (tunnel/bridge) |
| Yellow X in lane | Railroad approach |
| White yield triangles | Yield line at roundabout |
| Blue curb | Disabled permit parking only |
| Question mentions… | Answer… |
|---|
| Cross double yellow to pass | Never - passing only |
| Turn left across double yellow | Legal into driveway/street |
| Solid white between lanes | Do not change lanes |
| Center lane both markings | Shared left-turn pocket |
| Stop position | Behind stop line, not crosswalk |
| RR pavement X | Stop within 15-50 ft if active |
