Sharing the Road and Highway Driving: Motorcycles, Large Trucks and the No-Zone, Pedestrians on Both Sides of the Windshield, Blind Pedestrians, Bicycles, Mopeds and Their Equipment, Electric Bicycle Classes, Funeral Processions, Road Rage, Reporting Drunk Drivers, Littering, Lane Choice and Passing on Highways, Blind Spots, Being Passed, Keeping Pace, Slow Vehicles, Stopping, Entrance and Exit Ramps, Interchanges, Highway Hypnosis, Fatigue and Breakdowns

Written for aiforu2 as the source for a practice-test bank and the on-device tutor for the Missouri written test. The facts follow the official manual; the wording is ours.

Source: Missouri Driver Guide (Department of Revenue, revised August 2026), Chapter 4 "Sharing the Road" (pages 28–34) and Chapter 6 "Highway Driving" (pages 37–41).

Motorcycles

Motorcycles are easy to overlook and their speed and distance are hard to judge. On residential streets, especially with parked cars, drive at or below the limit. Riders change speed and lane position for manhole covers, diagonal railroad tracks, debris and strong winds, so be ready. Never share a lane with a motorcycle; the rider needs the whole lane. When passing, give a motorcycle the full lane width, never squeeze by, and wait for a clear stretch if the lane is too narrow to share.

For riders, Missouri law requires a helmet. Keep the bike in safe condition, wear bright clothing, stay out of blind spots, use lights and reflectors after dark, signal early, leave three to four feet when passing parked or moving vehicles for opening doors and swerves, take extra care at intersections where drivers may not see you or may misjudge your speed, and ride a steady, predictable line. Riding a motorcycle on public streets requires a license with a motorcycle endorsement or a motorcycle license.

Large trucks

Trucks are not big cars. A tractor-trailer may weigh up to 80,000 pounds and exceed 90 feet; doubles and triples on busy routes can pass 100 feet. A loaded truck accelerates slowly, sometimes through ten gears, because its engine moves 30 or 40 times more weight than a car's.

• Do not pull onto a road in front of a large vehicle, and avoid changing lanes in front of one when you are about to turn off.
• If you cannot see the truck driver in the truck's mirrors, the driver cannot see you. Trucks and buses have blind spots on both sides, behind and in front, called the No-Zone; stay out of it except when you must, do not ride alongside for long, and do not tailgate.
• Passing a truck takes longer. Do not move back in until you can see the cab in your rearview mirror, keep your speed, and never slow down once you are in front.
• On steep grades trucks stay slow in the right lane, so avoid the right lane on hills of divided roads, and near weigh stations leave the right lane free for merging trucks.
• Vehicles carrying hazardous materials stop at every railroad crossing.
• A truck may swing left before a right turn; watch its signals before passing.
• At 55 mph a car stops in about 130 to 140 feet, almost half a football field; a loaded tractor-trailer may need almost 400 feet.
• Cutting off a truck is especially dangerous; slow down and turn behind it.
• A truck's size makes it look slower than it is; many car-truck crashes at intersections happen because the car driver misjudged how close and how fast it was.

Pedestrians

When you step out of your vehicle you become a pedestrian. Facing a "Walk" signal or green light you have the right-of-way, but cross only after making sure drivers see you and stop. Do not start across on "Don't Walk" or a red or yellow light; if the flashing "Don't Walk" starts while you are crossing, finish. Cross at an intersection or crosswalk in a business district or between two closely spaced signalized intersections; elsewhere you may cross mid-block, carefully, and you must yield to all traffic when you do. Walk facing traffic where there is no sidewalk, and do not stand in a traffic lane to talk to a driver.

As a driver, whether or not the pedestrian is obeying the law you must drive carefully, slow if needed and do your best not to endanger anyone. Even on a green light, yield to pedestrians still in the intersection, and never assume they see you. Do not pass a vehicle that has stopped or slowed for a pedestrian. Children run into the road without looking, so be extra careful near schools, playgrounds, parks and homes; obey the lower school zone limit when lights flash or children are present, and stop for a traffic patrol member's signal. You must come to a complete stop for a pedestrian guided by a dog or carrying a white cane (or a white cane with a red tip), and yield to any pedestrian in a marked or unmarked crosswalk on or approaching your half of the road. Turning right, especially on red, watch for pedestrians and bicyclists coming up on your right; do not block a crosswalk at a red light, and yield before crossing any sidewalk or crosswalk.

Bicycles and mopeds

Most collisions with bicycles and mopeds happen at intersections, where they are easy to overlook, so scan for them and treat them like any other vehicle. Crashes with wrong-way riders often happen when a driver turning right onto a main road looks only left; look right too, including the sidewalk. If you are following a cyclist and need to turn right, stay behind until you can turn; turning left, yield to oncoming cyclists unless you are sure you can finish first. Give bicycles and mopeds the full lane width when passing, slowing if necessary. Check for cyclists before opening a door into a traffic or bicycle lane. You may cross a bike lane to turn or to enter or leave the road, and you must yield to riders in it.

Riders have the same rights and duties as motorists: ride with traffic, generally as far right as is safe when going slower than traffic, keeping clear of edge hazards like ditches, gutters, sand and gravel. Move toward the middle or left when turning left, avoiding hazards, when the lane is too narrow to share, or when a right-turn-only lane lies ahead and you are going straight; on a one-way street you may also ride as far left as is safe. Mopeds are not allowed on the interstate system. The law does not require a bicycle or moped helmet, though the guide urges one. For adults and teens, riding in the street with traffic is far safer than riding on the sidewalk.

A moped rider needs a valid driver license. A motorized bicycle has an automatic transmission, a motor of no more than 50 cc producing less than three gross brake horsepower, and a top speed of 30 mph on level ground. Mopeds and bicycles need no registration or inspection, but the law requires brakes that stop the bike within 25 feet from 10 mph, and from half an hour after sunset to half an hour before sunrise: a white front light visible from 500 feet, a red rear reflector of at least two square inches or a red light visible at 600 feet in low beams, reflective material or lights on the pedals, cranks, shoes or lower legs visible at 200 feet, and reflective material or lights on each side visible at 300 feet (the side requirement does not apply to mopeds meeting federal standards).

Electric bicycles

An electric bicycle has working pedals, a seat and a motor under 750 watts. Class 1 assists only while pedaling and stops at 20 mph; Class 2 can propel the bike without pedaling and stops assisting at 20 mph; Class 3 assists only while pedaling and stops at 28 mph. Riding one requires no operator or motorcycle license.

Funeral processions

Vehicles in a procession follow closely and use their flashing emergency lights, and an organized procession has the right-of-way at every intersection regardless of the signal, except for emergency vehicles or when police direct otherwise. Other drivers must not drive between moving procession vehicles, join a procession to gain the right-of-way, pass it except where a passing lane is provided, or enter an intersection the procession is crossing against a red light unless they can do so without crossing its path.

Road rage, drunk drivers and litter

Road rage is an uncontrolled display of anger by a driver, usually in reaction to another driver, that can end in property damage or injury: horn blasts, pursuit, headlight flashing, gestures, forcing a vehicle over, tailgating, brake-checking, cutting off, verbal abuse, threats, bumping, deliberate obstruction, damage and assault. When you meet it, stay calm and do not answer in kind, note the location, the driver and the vehicle (year, make, model, color, plate), and report it as soon as possible; from a cell phone, leave the road to a safe spot and dial **\55 (or 911 in a metropolitan area). If you think you have seen a drunk driver, tell police immediately with the plate, a description of car and driver, and the location. Littering is illegal and dangerous (a lit cigarette can blow into the car behind); the penalty can be a fine of up to $1,000 and/or up to one year* in jail.

Highway driving basics

Look down the road, to the sides and behind, and do not take your eyes off the road for more than a few seconds; pull off safely to read a map. On a two-lane highway drive in the right lane, crossing the center line only to pass when no vehicle is coming and there is no solid yellow line. On four or more lanes keep right except to pass slower traffic, to make room for an entering driver, or to prepare for a legal left turn. Watch the speedometer and posted limits, especially when you leave a fast road for slower local streets.

Passing on highways

Use the left lane only to pass; the right lane may be used to pass a vehicle turning left; never pass on the shoulder or unpaved edge. Before passing on a four-lane road, check the left lane with your left and inside mirrors and a quick look over your left shoulder for the blind spots your mirrors miss. Avoid driving beside and slightly behind another vehicle; speed up or drop back so the driver can see you, and get through a blind spot quickly without speeding. Never linger beside or right behind a truck or bus, and after passing a truck wait until its cab shows in your mirror before pulling back in. Signal, pass quickly and smoothly, and do not return to the right lane until the passed vehicle appears in your rearview mirror, checking over your right shoulder and signaling.

When another driver passes you, stay in your lane and do not speed up. If many vehicles are passing you on the right on a multi-lane road, you are too slow; move to the right lane unless you will turn left soon.

Keeping pace with traffic

Vehicles moving in the same lane at the same speed cannot hit each other. Driving faster than traffic means repeated passing, each with a chance of a crash, and speeding saves only a few minutes an hour. Driving much slower bunches vehicles behind you and tempts them to pass; if a line forms, pull over when safe and let them by. Check your mirrors every few seconds and keep a safe following distance. Spot slow vehicles early, such as trucks and underpowered cars on grades or entering traffic, so you can change lanes or slow gradually; sudden slowing causes crashes.

Stopping and emergencies

Never stop on the highway itself; use rest stops and service areas. Know well ahead when you must stop, because sudden braking can cost you control and gives drivers behind no time. In an emergency you may stop on the shoulder with the flashers on, the hood raised or a white cloth on the antenna. If you break down, get off the road if at all possible, turn on the flashers, stop where drivers have a clear view (not just over a hill or around a curve), set flares behind the vehicle, never stand in the roadway or change a tire in a traffic lane, and call for help; the cellular emergency number is **\55*.

Controlled-access highways

You enter and leave only at ramps. Entrance ramps are short and one-way, usually ending in an acceleration lane where you match highway speed, find a gap, signal and merge smoothly; do not stop at the end unless traffic is very heavy and you must. Drivers on the highway should make room, but you must yield to them even if that means stopping. Exit ramps begin with a deceleration lane: get into the correct lane well ahead, slow on the ramp, obey the ramp's advisory speed, and be ready to stop or yield at the end. If you miss an exit, never stop, back up or turn around; go on to the next exit and come back.

Where busy highways meet there are interchanges such as the cloverleaf, diamond, directional and the newer diverging diamond, where you briefly drive on the left side of the road; directional signs guide you through.

Hypnosis and fatigue

Highway hypnosis comes from the sameness of road and traffic and the hum of wind, tires and engine; fight it by moving your eyes and watching traffic and signs, and pull off if you feel sleepy. Fatigue slows decisions and reactions, and tired drivers can be as dangerous as intoxicated ones; take a nap at a rest stop or service area if you need it.

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