Signs, signals and markings in Massachusetts
Signs, signals and pavement markings tell you what to do before you reach a hazard. Road signs are a named topic on the Massachusetts permit exam, so it pays to know them by shape and color as well as by words.
Massachusetts also uses some newer features, such as pedestrian hybrid beacons, bicycle boxes and red bus lanes, that drivers from other places may not have seen.
By the end of this topic you can
- You can identify what each sign color means.
- You can respond correctly to steady, flashing and arrow signals.
- You can explain the meaning of white and yellow lane lines.
- You can recognize bike lanes, bicycle boxes, green pavement and red bus lanes.
What you need to know and understand
- Red means stop or prohibition, yellow is a general warning, orange is work zone, green gives directions, blue is motorist services and brown is recreation or scenic sites.
- Fluorescent yellow-green is used for school, bicycle, pedestrian and curve warnings, and fluorescent pink for incident management.
- A flashing red light means the same as a STOP sign; a flashing yellow light means proceed with caution.
- If signals are dark and not working, treat the intersection as a stop in all directions.
- Massachusetts state highway route numbers are on white rectangular signs with black letters.
- At a railroad crossing with flashing lights, stop at least 15 feet from the light post or gate.
Reading traffic lights
- Steady red: stop. Turn right after a full stop unless signs forbid it.
- Steady yellow: the light is about to turn red, so stop if you safely can.
- Flashing yellow arrow: you may turn after yielding to oncoming traffic and pedestrians.
- Green arrow: a protected turn in the direction of the arrow.
- Rectangular rapid flashing beacon: amber lights flash in an irregular pattern, and you must stop for pedestrians.
- Pedestrian hybrid beacon: dark means proceed with caution, flashing yellow means slow, solid yellow means prepare to stop, solid red means stop, and flashing red means stop then go if clear.
Lines on the road
White lines separate lanes going the same way. You may cross a broken white line to change lanes when safe, but you should not cross a solid white line unless avoiding danger, and you may not cross a double solid white line.
Yellow lines separate traffic going opposite ways. You may cross a broken yellow line to pass when safe. With one solid and one broken line, you may pass only if the broken line is on your side. Do not cross double solid yellow lines except to turn left.
Lanes for bikes and buses
Bicycle lanes are marked with solid white lines and are five feet wide. You may enter one only to turn on or off the road, after checking for bicyclists. Green pavement marks conflict areas, and at a red light you should not stop on it.
A bicycle box is a green area in front of the stop line. Drivers must stop behind it, even when it is empty. Red pavement marks lanes and stops for public transit. A white diamond on the road means a special lane, such as HOV or bus only.
Common mistakes
- Treating a flashing red signal like a yield. It requires a full stop.
- Stopping on top of a bicycle box at a red light. Stop behind it.
- Passing on a double yellow line when the solid line is on your side.
- Assuming a dark, broken signal means you have priority. Treat it as an all-way stop.
Test yourself: Signs, signals and markings in Massachusetts
Answer each question, then read the explanation. Questions come in a random order each time.
Loading questions…
Go deeper
Sources: Massachusetts Driver's Manual, revised April 2026, Chapter 4 (MassDOT Registry of Motor Vehicles). Independent guide, not affiliated with any licensing agency. Always check the latest official rules with the Massachusetts licensing agency.