Stay behind the truck at a safe distance and only pass when the road ahead is fully visible and clear of oncoming traffic
When approaching an intersection, how far back should you stay before passing another vehicle?
Never pass within 100 feet of an intersection, bridge, or railroad crossing
Visibility drops sharply near these spots, so the NHTSA warns it’s unsafe to try passing. Imagine creeping up to a stop sign with a truck blocking your view—that’s exactly when you shouldn’t swerve out. If someone behind you honks or tries to dart around, just ease off the gas and let them go. Always glance at your mirrors before slowing down, too. (Otherwise you might become the reason someone else has to slam their brakes.)
What should you avoid doing when approaching an intersection or bridge?
Never drive on the left side of the road within 100 feet of an intersection or bridge
Whether there’s a stop sign or not, stay right. The California DMV stresses this keeps your line of sight clear and prevents blocking pedestrians or oncoming cars. Pick a signpost or lamppost as your 100-foot marker—if you can’t see it yet, you’re still in the danger zone. Getting into the correct lane early also stops last-minute swerves, which often lead to fender benders.
Is it true that passing uphill requires double the usual clearance time?
Yes—you need at least double the usual clearance time to pass safely when going uphill
Uphill traffic crawls, while downhill cars can pick up speed fast and lose control. The IIHS flags these zones as high-risk because sightlines shrink and stopping distances grow. Railroad crossings, bridges, tunnels, and curves? Absolute no-passing zones. If you’re unsure, wait it out—getting there five minutes later beats a trip to the hospital.
What’s the safest following distance behind another car?
Use the “three-second rule”: keep at least three seconds of space between your car and the one in front
Pick a tree or sign, then count “one-one-thousand, two-one-thousand, three-one-thousand” after the car ahead passes it. The Consumer Reports team suggests bumping that to four seconds at night, in rain, or behind big rigs. Tailgaters? Don’t hit the gas—just ease off slightly to open more room and nudge them to pass.
How fast can you legally go through a blind intersection?
Stick to 15 mph at blind intersections
A blind intersection hides anything more than 100 feet away in every direction for the last 100 feet before the crossing. The U.S. Department of Transportation says you must be able to stop on a dime if a car or pedestrian pops out. Creep forward until you can see—just don’t assume you own the intersection. Always be ready to yield.
What do we call it when a large vehicle is tailgating you?
It’s called a “closed sightline to the rear”
Your rearview mirrors are useless when a big truck is riding your bumper. The FMCSA cautions this blocks your blind-spot checks when you change lanes. If a truck is on your tail, avoid slamming the brakes—tap them lightly to signal the driver to back off. Move right if traffic allows.
At a four-way stop, who goes first when two cars arrive simultaneously?
The car furthest to the right has the right of way
Most U.S. states follow this rule to the letter. Three cars at once? The leftmost car yields until the others clear. The AAA Foundation suggests making eye contact when things feel fuzzy—especially at uncontrolled intersections. Always come to a full stop and scan before rolling forward.
What must you do at an intersection with a flashing red light?
Come to a complete stop, then proceed only when it’s safe and you have the right of way
A flashing red light is basically a stop sign in disguise. The FHWA says stop behind the line or crosswalk, yield to pedestrians and vehicles already in the intersection, then look every which way before moving. Never trust that the other driver will stop—always double-check.
What’s the correct response when you hear a siren approaching?
Safely pull over to the right and stop until the emergency vehicle passes
According to the U.S. Department of Homeland Security’s EMS office, slow down, hug the right curb, and freeze. Don’t block driveways or intersections, and never stop in the left lane. If you’re already left-side, ease right if traffic allows. Stay put until the emergency vehicle is long gone—don’t even think about moving until you see its taillights in your mirror.
How can you check your blind spot most effectively?
The best way is a quick shoulder check—turn your head to glance over your shoulder
A real shoulder check means moving your whole head, not just your eyes. The Edmunds.com crew suggests doing this every time you signal, merge, or park. Don’t trust blind-spot sensors—they can miss bikes or tiny cars. Make it a habit every single time you change lanes.
How much stopping distance should you keep at night?
Keep at least four seconds of following distance at night, and within the range of your headlights
Darkness stretches reaction times, so the NHTSA wants you doubling your daytime cushion. Use the same tree-or-sign trick, but count to four this time. At 55 mph you’ll cover about 300 feet in four seconds—so aim to stay that far back.
How early should you signal in rural areas?
Signal at least 20 to 25 seconds ahead of your intended maneuver in rural areas
That early heads-up gives drivers plenty of time to react on high-speed roads with narrow shoulders. The American Association of State Highway and Transportation Officials recommends scanning far ahead for turns, exits, or slow-moving farm gear. Use your signal even when no one’s behind you—it’s about communication, not just rules. Check mirrors and blind spots after signaling.
How many car lengths equal a two-second gap?
At any speed, a two-second gap equals roughly one car length for every 5 mph you’re traveling
So at 55 mph you’d want about 11 car lengths between you and the car ahead. The Kelley Blue Book warns that car-length math is shaky because vehicles vary so much. Stick to the three-second rule as your baseline and stretch it when weather turns ugly or you’re behind trucks.
What’s considered a safe following distance in car lengths?
A safe gap is at least three seconds behind the car ahead
That’s about three car lengths at 30 mph, but much more at highway speeds. The Insurance Information Institute says this cushion buys you time to stop if traffic suddenly halts. Use a fixed object and count “one-one-thousand, two-one-thousand, three-one-thousand” after the car ahead passes it. Adjust for road conditions and vehicle weight.
How many feet should you keep between you and the car in front?
Keep at least a two-second gap behind the car in front, no matter your speed
That’s the foundation of the two-second rule—it scales with speed. The Zero Defects Driving School says bump it to three or four seconds at night or in bad weather. Tailgating is a recipe for rear-end collisions—if the car ahead stops fast, you need room to react. If someone’s on your bumper, slow down gently to urge them to back off.
Edited and fact-checked by the FixAnswer editorial team.
