New Jersey driving lesson · Signs, Signals, and Road Markings
Roundabouts, rumble strips, and slow-moving vehicles
A 3-minute lesson from the New Jersey course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.
Some road features are designed to slow you down or to make intersections safer. Know what a roundabout, rumble strip, speed bump or slow-moving vehicle sign is telling you.
Know the rule
A fluorescent, reflective orange triangle marks slow-moving vehicles, such as farm and construction equipment, on public roads. Their operators must obey all traffic rules and display the sign on the back.
Small indentations or raised strips across or along the road or shoulder that warn of a decision point ahead, such as a four-way intersection after miles of open road.
Rumble strips vibrate the steering wheel and make noise to wake a dozing driver or warn of danger. They won't damage your vehicle, are meant to slow you down, and are almost always used with a cautionary sign.
A one-way, circular intersection where traffic flows around a center island, designed for drivers, pedestrians (including those with disabilities) and bicyclists.
Roundabouts eliminate conflicting movements such as left turns; traffic enters and exits only by right turns, which substantially reduces severe crashes.
In an older traffic circle with no signs, the established traffic pattern usually decides right-of-way. If in doubt, the vehicle on the left yields to the vehicle approaching from the right.
Your tires hit a band of rumble strips on a rural highway, followed by a sign for a four-way stop ahead. That's their job: slow down and prepare to stop.
Check your understanding
Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.
In a roundabout, how does traffic typically flow?
Two-way, with vehicles passing in both directions
Only clockwise, regardless of side of road
There is no consistent pattern
One-way, circulating around a center island
Answer: One-way, circulating around a center island
A roundabout is a one-way, circular intersection where traffic flows around a center island.
