Overview of Traffic Signals and Lane
Line Markings
Appearance of Traffic Signals and Lane Markings
● Traffic signals and lane markings are visual indicators on roadways, including painted
lines, words, and symbols.
● They are crucial for guiding drivers, bicyclists, and pedestrians, providing warnings and
directions.
● Key elements to identify include the type, color, and position of the markings.
● Lane markings can be found on the paved roadway and surrounding curbs and
shoulders, enhancing road safety.
Purpose of Lane Line Markings
● Lane markings serve to reduce the risk of accidents by providing clear guidance to all
road users.
● They help in organizing traffic flow, indicating where vehicles should travel and where
they should not.
● Specific markings indicate different types of lanes, such as passing lanes, no-passing
zones, and turn lanes.
Types of Lane Line Markings
Yellow Lane Line Markings
● Yellow lane lines separate traffic moving in opposite directions, crucial for maintaining
safe travel.
● Double solid yellow lines indicate that crossing is prohibited, marking the center of a
two-way roadway.
● A single broken yellow line allows for passing when safe, marking the center of a
one-way roadway.
White Lane Line Markings
● White lane lines separate traffic moving in the same direction, aiding in lane discipline.
● A single solid white line marks the right edge of the roadway, indicating where drivers
should not cross.
Line Markings
Appearance of Traffic Signals and Lane Markings
● Traffic signals and lane markings are visual indicators on roadways, including painted
lines, words, and symbols.
● They are crucial for guiding drivers, bicyclists, and pedestrians, providing warnings and
directions.
● Key elements to identify include the type, color, and position of the markings.
● Lane markings can be found on the paved roadway and surrounding curbs and
shoulders, enhancing road safety.
Purpose of Lane Line Markings
● Lane markings serve to reduce the risk of accidents by providing clear guidance to all
road users.
● They help in organizing traffic flow, indicating where vehicles should travel and where
they should not.
● Specific markings indicate different types of lanes, such as passing lanes, no-passing
zones, and turn lanes.
Types of Lane Line Markings
Yellow Lane Line Markings
● Yellow lane lines separate traffic moving in opposite directions, crucial for maintaining
safe travel.
● Double solid yellow lines indicate that crossing is prohibited, marking the center of a
two-way roadway.
● A single broken yellow line allows for passing when safe, marking the center of a
one-way roadway.
White Lane Line Markings
● White lane lines separate traffic moving in the same direction, aiding in lane discipline.
● A single solid white line marks the right edge of the roadway, indicating where drivers
should not cross.
