Wyoming DOT Road Rules — 13 Questions with Answers

Most states require a parallel-parked car to have its wheels within 12 inches of the curb, and some allow up to 18, so staying within 12 inches keeps you legal in either case. A wider gap leaves the car sticking out into the travel lane, where it becomes a hazard to passing traffic.

Tip A gap of roughly 6 to 12 inches keeps you within the limit while protecting your tires from the curb.

Tight or curving roads, intersections, railroad crossings, and wet or slippery pavement all leave less room for error. A lower speed buys you reaction time and cuts the distance you need to stop.

High speeds and heavy traffic on major highways leave little time to respond, so you need to stay focused, scan the road and mirrors continually, and be ready for hazards such as stalled vehicles, debris, or sudden slowdowns.

Headlights are required whenever poor light or bad weather keeps you from seeing people and vehicles 1,000 feet ahead. Using them then helps you see the road and helps other drivers see you.

When wipers quit during rain or snow, your view is nearly gone. Slow down, and if looking out the open driver's window is your only means of seeing ahead, do so; brake and leave the road at the first safe chance. Once stopped, put on your hazard flashers and wait until the weather clears or the wipers are repaired.

A stop sign, a red signal, and a stop order from an officer directing traffic each require a full stop. The same duty applies in other cases too, such as a school bus with flashing red lights or a train approaching a railroad crossing.

When a crash cannot be avoided, the goal is to reduce the force of the impact. Something that yields absorbs energy better than a rigid object, a stationary object is less violent to hit than an oncoming vehicle, and a glancing contact is far less dangerous than a direct, head-on hit.

Emergency vehicles may stop or turn without warning, and others may be following, so the law requires you to stay back at least 500 feet once one has passed. Trailing it closely is dangerous, and after it goes by you may resume normal driving while keeping that distance.

Total stopping distance is the ground you cover while reacting plus the distance needed to brake, which depends on speed, brakes, tires, and the road surface. Darkness can make hazards harder to spot, but the clock itself does not change how far the vehicle needs to stop.

Tip When judging how quickly you can stop, think about speed, reaction time, brakes, tires, and pavement, not the hour.

As soon as you hear a siren or notice red or blue lights flashing, give the emergency vehicle the right-of-way by moving to the right edge of the road and stopping until it goes by. You must do this no matter what other drivers are doing.

Passing must always be done on the paved, main part of the road. Pulling onto the shoulder or dirt edge to get by is never allowed, even next to a vehicle that is turning left.

Flashing red lights mean the bus is picking up or dropping off children, so traffic behind it must halt and remain stopped until the lights shut off and the stop arm retracts. Slowing down or passing instead is illegal and dangerous. How far back you must stop depends on the state; where the law gives a distance, it is usually 10 to 20 feet.

Headlights are required from half an hour after sunset until half an hour before sunrise, plus whenever rain, fog, snow, or dim light makes people and vehicles hard to see. They help you see the road and help others see you.