Generally, the signs notify motorists that the construction vehicle could be moving into a closed lane or work site and caution drivers not to follow the construction vehicle too closely. Their main purpose, Patrie said, is to make people aware that they're behind a construction vehicle that might make an odd maneuver.
What does the do not pass symbol mean?
The do not pass sign is a regulatory sign. Do not pass signs indicate that the stretch of road the driver is on is unsafe to pass another car on. Passing zones are based on how far ahead the driver is able to see.
What do yellow road signs mean?
Yellow signs generally relate to traffic routes during roadworks. They are often temporary signs and give instructions about lane closures (see above, where the right lane is set to close in 450 yards) or diversions.
What do the different shapes of road signs mean?
Diamond-shaped signs signify warnings. Rectangular signs with the longer direction horizontal provide guidance information. Pentagons indicate school zones. A circular sign warns of a railroad crossing.
What is the correct rule to use when following a vehicle?
The Three-Second Rule
Increasing the distance between you and the car ahead can help give you the time you need to recognize a hazard and respond safely. The National Safety Council recommends a minimum three-second following distance. Determining the three-second gap is relatively easy.
What are construction barrels filled with?
Most times, the round barrel attenuators are filled with sand, but not liquid. When the barrel is filled with sand, it is actually a combination of sand and salt. The salt keeps the moisture in the sand from freezing.