Missouri Permit Test cheat sheet

Sign shapes carry meaning: octagon = STOP, inverted triangle = YIELD, diamond = warning, pennant = no-passing zone, round = railroad advance warning, crossbuck = railroad crossing, pentagon = school zone/crossing.

Sign colors: red = stop/prohibit, yellow = warning, fluorescent yellow-green = school/pedestrian/bicycle warning, orange = construction/work zone, white = regulatory, green = guide/distance, blue = services, brown = recreation/cultural.

A steady red light means stop before the crosswalk or stop line; right turn on red is allowed after a full stop unless a sign prohibits it, and you must yield to traffic and pedestrians.

A flashing red signal is treated as a stop sign; a flashing yellow signal means slow down and proceed with caution; a red arrow prohibits movement in that direction until the arrow changes.

A steady yellow light warns the signal is changing to red; if you can stop safely, stop - do not accelerate to beat the light.

At a railroad crossing with flashing red lights, a lowered gate, or a flagger, you must stop and remain stopped until the signals stop and the gate is fully raised.

A green arrow means you may proceed in that direction; a green light alone does not give you the right-of-way over pedestrians in the crosswalk.

Pavement markings: solid white lines separate lanes moving the same direction, solid yellow separates opposing traffic, and a double solid yellow line means no passing in either direction.

At an uncontrolled intersection (no signs or signals), the vehicle arriving first goes first; if two arrive at the same time, the vehicle on the left yields to the vehicle on the right.

At a four-way stop, first to stop is first to go; if two stop simultaneously, the driver on the left yields to the driver on the right.

A vehicle turning left must yield to oncoming traffic going straight or turning right, and to pedestrians in the crosswalk.

When entering a roadway from a driveway, alley, private road, or parking lot, you must yield to all traffic already on the road and to pedestrians.

You must yield to emergency vehicles using lights and siren - pull to the right edge and stop; if in an intersection, clear it first.

At a roundabout, yield to traffic already circulating inside; enter to the right and do not stop inside the circle.

You must yield to pedestrians in a marked or unmarked crosswalk, and you may not pass a vehicle stopped at a crosswalk for a pedestrian.

A funeral procession with headlights on has the right-of-way; do not cut into or pass through it.

Signal at least 100 feet before turning or changing lanes; on a highway, signal at least 300 feet before a turn.

Left turns are made from the leftmost lane available and into the corresponding lane; right turns are made from the right lane as close to the curb as practicable.

Passing on the left is permitted when the line is broken yellow on your side; a solid yellow line on your side means no passing.

You may not pass within 100 feet of an intersection, railroad crossing, or bridge, or when a school bus is stopped with red lights flashing.

A center left-turn lane (two-way left-turn lane) may be entered only to prepare for a left turn or a permitted U-turn - not for passing or travel.

On a road with three or more lanes, drive in the right lane except to pass or when preparing for a left turn.

When changing lanes, check mirrors, signal, check blind spots, and yield to traffic already in the lane you want.

Do not drive in a lane marked with a bicycle symbol or in a shoulder lane unless signs permit it.

Missouri default speed limits: 25 mph in business/residential areas unless posted, 60 mph on rural interstates, 70 mph on rural interstates with four or more lanes.

Use the three-second rule for following distance in good conditions; increase to four or more seconds at night, in rain, or when following motorcycles or large trucks.

The basic speed law: never drive faster than is safe for existing conditions, regardless of the posted limit.

Slow to 25 mph or less in a school zone when children are present and signs indicate; obey the posted school-zone times.

Reduce speed and use lower gears on steep downgrades; do not ride the brakes continuously.

When entering a highway from an on-ramp or entering a work zone, adjust speed to merge with traffic and obey the reduced posted limit.

Stopping distance = perception distance + reaction distance + braking distance; wet roads roughly double braking distance, and ice can multiply it many times.

If a vehicle follows too closely, increase your own following distance rather than brake-checking.

Pedestrians: yield at crosswalks and when they are in your lane; blind pedestrians with a white cane or guide dog always have the right-of-way.

Bicycles: give at least three feet of clearance when passing; bicycles are vehicles and must follow the same traffic laws.

Motorcycles: give a full lane; do not share a lane with a motorcycle, and check blind spots before changing lanes.

Large trucks: remember no-zones (blind spots) at the front, sides, and rear; if you cannot see the truck driver's mirrors, the driver cannot see you.

A truck making a right turn may swing wide to the left first; do not pass on the right of a turning truck.

School buses: when a school bus has red lights flashing and the stop arm out, stop in both directions on an undivided road; on a divided highway, only traffic behind the bus must stop.

Emergency vehicles: yield and pull to the right; do not follow within 500 feet of a fire truck or ambulance responding to an emergency.

Slow down and move over one lane when passing stopped emergency, tow, or highway-maintenance vehicles with lights flashing, if safe to do so.

Missouri's legal limit is 0.08% BAC for drivers 21 and older; a commercial driver's limit is 0.04%.

Missouri has a zero-tolerance law: drivers under 21 with any measurable BAC (0.02% or more) can lose their license.

A DWI conviction carries license suspension, fines, possible jail time, and a requirement for an ignition interlock device for repeat offenses.

Implied consent: by driving in Missouri you agree to a chemical test; refusing can result in license revocation even without a conviction.

Alcohol impairs judgment and reaction time before you feel drunk - coffee, food, or a cold shower do not sober you up.

Prescription and over-the-counter drugs, including allergy and sleep medications, can impair driving and can support a DWI charge.

Texting while driving is illegal for all drivers in Missouri; handheld use is restricted for drivers under 21.

Distracted driving includes eating, grooming, adjusting the radio, and using a phone; even hands-free calls increase crash risk.

Missouri's Graduated Driver License: an instruction permit at age 15, an intermediate license at 16, and a full license at 18 (or after meeting requirements).

A 15-year-old permit holder must be accompanied by a licensed driver 21 or older in the front seat and complete 40 hours of supervised driving (including 10 at night) before the intermediate license.

Intermediate license holders under 18 may not drive between 1:00 a.m. and 5:00 a.m. except for school, work, or emergencies, and may carry no more than one unrelated passenger under 19.

Missouri assesses points for moving violations: 2 points for most moving violations, 4 points for DWI and certain serious offenses, and 8 points for driving while suspended.

A driver under 21 who accumulates 4 points in 12 months, or any driver who accumulates 8 points in 18 months, faces suspension.

Missouri requires minimum liability insurance: $25,000 per person and $50,000 per accident for bodily injury, and $25,000 for property damage.

Driving without proof of insurance can result in license suspension and reinstatement fees; proof of insurance is required at registration and on request by law enforcement.

Points remain on a Missouri driver record for 18 months from the date of conviction.

A pentagon-shaped sign marks a school zone or school crossing; slow down and watch for children.

A round yellow sign with a black X and RR marks a railroad crossing ahead - slow down, look both ways, and be prepared to stop.

An orange diamond sign marks a work zone; fines for speeding in a work zone can be doubled when workers are present.

A white rectangular sign with black lettering is regulatory and must be obeyed (speed limit, lane use, turn restrictions).

A yellow diamond warning sign does not change the law - it warns of a hazard ahead such as a curve, hill, or pedestrian crossing.

A red circle with a diagonal slash means the action shown is prohibited; a red arrow means no turn in that direction.

A steady green light gives you the right to proceed only when the intersection is clear and pedestrians are not crossing.

A sign with a yellow background and black symbol may be a warning or a regulatory sign - read the shape and color to decide how to react.

A driver entering a roundabout yields to all traffic already inside the circle; do not change lanes inside a roundabout.

At a T-intersection without signs, the vehicle on the through road has the right-of-way over the vehicle on the ending road.

When two vehicles approach an uncontrolled intersection at the same time, the driver on the left must yield to the driver on the right.

A left-turning driver must yield to oncoming traffic and to pedestrians, even when the light is green.

A driver entering a roadway from a private driveway or alley must stop and yield to all traffic and pedestrians.

You must yield to any emergency vehicle with lights and siren; pull to the right and stop until it passes.

At a four-way stop, the first vehicle to come to a complete stop has the right-of-way; if two stop at the same time, the one on the left yields.

A funeral procession has the right-of-way and may proceed through intersections without stopping; do not cut into the procession.

A solid yellow line on your side of the center line means no passing; a broken yellow line means passing is allowed when safe.

A double solid yellow line means no passing in either direction; a solid white line marks the edge of a travel lane and should not be crossed except for emergencies.

You must signal at least 100 feet before a turn in a city and at least 300 feet before a turn on a highway.

A two-way left-turn lane may be used only to prepare for a left turn or a permitted U-turn, not for passing or through travel.

When passing on the left, return to the right lane only when you can see the passed vehicle in your rearview mirror and the lane is clear.

You may not pass within 100 feet of an intersection, railroad crossing, or bridge, or when a school bus has red lights flashing.

On a road with three or more lanes in one direction, drive in the right lane except when passing or preparing for a left turn.

A right turn must be made from the rightmost lane as close to the curb as practicable, and a left turn from the leftmost lane available.

Missouri's default limits: 25 mph in residential and business districts, 60 mph on rural interstates, and 70 mph on rural interstates with four or more lanes.

Use the three-second rule for following distance in good conditions; increase to four or more seconds at night, in rain, or when following motorcycles or large trucks.

The basic speed law: never drive faster than is safe for existing conditions, regardless of the posted limit.

Slow to 25 mph or less in a school zone when children are present and signs indicate; obey the posted school-zone times.

Stopping distance = perception distance + reaction distance + braking distance; wet roads roughly double braking distance and ice can multiply it many times.

Reduce speed and use a lower gear on steep downgrades; do not ride the brakes continuously.

Fine for speeding in a work zone can be doubled when workers are present; obey the reduced posted limit.

If a vehicle follows too closely, increase your own following distance rather than brake-checking.

Pedestrians: yield at crosswalks and when they are in your lane; blind pedestrians with a white cane or guide dog always have the right-of-way.

Bicycles: give at least three feet of clearance when passing; bicycles are vehicles and must follow the same traffic laws.

Motorcycles: give a full lane; do not share a lane with a motorcycle, and check blind spots before changing lanes.

Large trucks: remember no-zones (blind spots) at the front, sides, and rear; if you cannot see the truck driver's mirrors, the driver cannot see you.

A truck making a right turn may swing wide to the left first; do not pass on the right of a turning truck.

School buses: when a school bus has red lights flashing and the stop arm out, stop in both directions on an undivided road; on a divided highway, only traffic behind the bus must stop.

Emergency vehicles: yield and pull to the right; do not follow within 500 feet of a fire truck or ambulance responding to an emergency.

Slow down and move over one lane when passing stopped emergency, tow, or highway-maintenance vehicles with lights flashing, if safe to do so.

Missouri's legal limit is 0.08% BAC for drivers 21 and older; a commercial driver's limit is 0.04%.

Missouri has a zero-tolerance law: drivers under 21 with any measurable BAC (0.02% or more) can lose their license.

A DWI conviction carries license suspension, fines, possible jail time, and a requirement for an ignition interlock device for repeat offenses.

Implied consent: by driving in Missouri you agree to a chemical test; refusing can result in license revocation even without a conviction.

Alcohol impairs judgment and reaction time before you feel drunk - coffee, food, or a cold shower do not sober you up.

Prescription and over-the-counter drugs, including allergy and sleep medications, can impair driving and can support a DWI charge.

Texting while driving is illegal for all drivers in Missouri; handheld use is restricted for drivers under 21.

Distracted driving includes eating, grooming, adjusting the radio, and using a phone; even hands-free calls increase crash risk.

Missouri's Graduated Driver License: an instruction permit at age 15, an intermediate license at 16, and a full license at 18 (or after meeting requirements).

A 15-year-old permit holder must be accompanied by a licensed driver 21 or older in the front seat and complete 40 hours of supervised driving (including 10 at night) before the intermediate license.

Intermediate license holders under 18 may not drive between 1:00 a.m. and 5:00 a.m. except for school, work, or emergencies, and may carry no more than one unrelated passenger under 19.

Missouri assesses points for moving violations: 2 points for most moving violations, 4 points for DWI and certain serious offenses, and 8 points for driving while suspended.

A driver under 21 who accumulates 4 points in 12 months, or any driver who accumulates 8 points in 18 months, faces suspension.

Missouri requires minimum liability insurance: $25,000 per person and $50,000 per accident for bodily injury, and $25,000 for property damage.

Driving without proof of insurance can result in license suspension and reinstatement fees; proof of insurance is required at registration and on request by law enforcement.

Points remain on a Missouri driver record for 18 months from the date of conviction.

An octagon always means STOP; an inverted triangle always means YIELD - shape alone identifies these signs even if the face is obscured.

A pennant-shaped sign marks the start of a no-passing zone; a round sign warns of a railroad crossing ahead.

A crossbuck (X-shaped) sign marks the railroad crossing itself; yield to trains and stop if a train is approaching.

Flashing red = stop and proceed when clear (like a stop sign); flashing yellow = slow down and proceed with caution.

A red arrow means you may not turn in that direction until the arrow changes; a green arrow means the movement is protected.

Right turn on red is permitted after a complete stop unless a sign prohibits it; you must yield to traffic and pedestrians.

Orange signs and cones mark work zones; brown signs mark recreation and cultural areas; blue signs mark services such as gas and lodging.

A solid white line between lanes means lane changes are discouraged; a broken white line means lane changes are permitted when safe.

At an uncontrolled intersection, the first vehicle to arrive goes first; if two arrive at the same time, the vehicle on the left yields to the vehicle on the right.

A left-turning driver must yield to oncoming traffic going straight or turning right, and to pedestrians in the crosswalk.

A driver entering a roadway from a driveway, alley, private road, or parking lot must yield to all traffic already on the road and to pedestrians.

You must yield to emergency vehicles using lights and siren - pull to the right edge and stop; if in an intersection, clear it first.

At a roundabout, yield to traffic already circulating inside; enter to the right and do not stop inside the circle.

You must yield to pedestrians in a marked or unmarked crosswalk, and you may not pass a vehicle stopped at a crosswalk for a pedestrian.

A funeral procession with headlights on has the right-of-way; do not cut into or pass through it.

At a four-way stop, first to stop is first to go; if two stop simultaneously, the driver on the left yields to the driver on the right.

Signal at least 100 feet before turning or changing lanes; on a highway, signal at least 300 feet before a turn.

Left turns are made from the leftmost lane available and into the corresponding lane; right turns are made from the right lane as close to the curb as practicable.

Passing on the left is permitted when the line is broken yellow on your side; a solid yellow line on your side means no passing.

You may not pass within 100 feet of an intersection, railroad crossing, or bridge, or when a school bus is stopped with red lights flashing.

A center left-turn lane (two-way left-turn lane) may be entered only to prepare for a left turn or a permitted U-turn - not for passing or travel.

On a road with three or more lanes, drive in the right lane except to pass or when preparing for a left turn.

When changing lanes, check mirrors, signal, check blind spots, and yield to traffic already in the lane you want.

Do not drive in a lane marked with a bicycle symbol or in a shoulder lane unless signs permit it.

Missouri default speed limits: 25 mph in business/residential areas unless posted, 60 mph on rural interstates, 70 mph on rural interstates with four or more lanes.

Use the three-second rule for following distance in good conditions; increase to four or more seconds at night, in rain, or when following motorcycles or large trucks.

The basic speed law: never drive faster than is safe for existing conditions, regardless of the posted limit.

Slow to 25 mph or less in a school zone when children are present and signs indicate; obey the posted school-zone times.

Reduce speed and use lower gears on steep downgrades; do not ride the brakes continuously.

When entering a highway from an on-ramp or entering a work zone, adjust speed to merge with traffic and obey the reduced posted limit.

Stopping distance = perception distance + reaction distance + braking distance; wet roads roughly double braking distance, and ice can multiply it many times.

If a vehicle follows too closely, increase your own following distance rather than brake-checking.

Pedestrians: yield at crosswalks and when they are in your lane; blind pedestrians with a white cane or guide dog always have the right-of-way.

Bicycles: give at least three feet of clearance when passing; bicycles are vehicles and must follow the same traffic laws.

Motorcycles: give a full lane; do not share a lane with a motorcycle, and check blind spots before changing lanes.

Large trucks: remember no-zones (blind spots) at the front, sides, and rear; if you cannot see the truck driver's mirrors, the driver cannot see you.

A truck making a right turn may swing wide to the left first; do not pass on the right of a turning truck.

School buses: when a school bus has red lights flashing and the stop arm out, stop in both directions on an undivided road; on a divided highway, only traffic behind the bus must stop.

Emergency vehicles: yield and pull to the right; do not follow within 500 feet of a fire truck or ambulance responding to an emergency.

Slow down and move over one lane when passing stopped emergency, tow, or highway-maintenance vehicles with lights flashing, if safe to do so.

Missouri's legal limit is 0.08% BAC for drivers 21 and older; a commercial driver's limit is 0.04%.

Missouri has a zero-tolerance law: drivers under 21 with any measurable BAC (0.02% or more) can lose their license.

A DWI conviction carries license suspension, fines, possible jail time, and a requirement for an ignition interlock device for repeat offenses.

Implied consent: by driving in Missouri you agree to a chemical test; refusing can result in license revocation even without a conviction.

Alcohol impairs judgment and reaction time before you feel drunk - coffee, food, or a cold shower do not sober you up.

Prescription and over-the-counter drugs, including allergy and sleep medications, can impair driving and can support a DWI charge.

Texting while driving is illegal for all drivers in Missouri; handheld use is restricted for drivers under 21.

Distracted driving includes eating, grooming, adjusting the radio, and using a phone; even hands-free calls increase crash risk.

Missouri's Graduated Driver License: an instruction permit at age 15, an intermediate license at 16, and a full license at 18 (or after meeting requirements).

A 15-year-old permit holder must be accompanied by a licensed driver 21 or older in the front seat and complete 40 hours of supervised driving (including 10 at night) before the intermediate license.

Intermediate license holders under 18 may not drive between 1:00 a.m. and 5:00 a.m. except for school, work, or emergencies, and may carry no more than one unrelated passenger under 19.

Missouri assesses points for moving violations: 2 points for most moving violations, 4 points for DWI and certain serious offenses, and 8 points for driving while suspended.

A driver under 21 who accumulates 4 points in 12 months, or any driver who accumulates 8 points in 18 months, faces suspension.

Missouri requires minimum liability insurance: $25,000 per person and $50,000 per accident for bodily injury, and $25,000 for property damage.

Driving without proof of insurance can result in license suspension and reinstatement fees; proof of insurance is required at registration and on request by law enforcement.

Points remain on a Missouri driver record for 18 months from the date of conviction.

A pentagon-shaped sign marks a school zone or school crossing; slow down and watch for children.

A round yellow sign with a black X and RR marks a railroad crossing ahead - slow down, look both ways, and be prepared to stop.

An orange diamond sign marks a work zone; fines for speeding in a work zone can be doubled when workers are present.

A white rectangular sign with black lettering is regulatory and must be obeyed (speed limit, lane use, turn restrictions).

A yellow diamond warning sign does not change the law - it warns of a hazard ahead such as a curve, hill, or pedestrian crossing.

A red circle with a diagonal slash means the action shown is prohibited; a red arrow means no turn in that direction.

A steady green light gives you the right to proceed only when the intersection is clear and pedestrians are not crossing.

A sign with a yellow background and black symbol may be a warning or a regulatory sign - read the shape and color to decide how to react.

A driver entering a roundabout yields to all traffic already inside the circle; do not change lanes inside a roundabout.

At a T-intersection without signs, the vehicle on the through road has the right-of-way over the vehicle on the ending road.

When two vehicles approach an uncontrolled intersection at the same time, the driver on the left must yield to the driver on the right.

A left-turning driver must yield to oncoming traffic and to pedestrians, even when the light is green.

A driver entering a roadway from a private driveway or alley must stop and yield to all traffic and pedestrians.

You must yield to any emergency vehicle with lights and siren; pull to the right and stop until it passes.

At a four-way stop, the first vehicle to come to a complete stop has the right-of-way; if two stop at the same time, the one on the left yields.

A funeral procession has the right-of-way and may proceed through intersections without stopping; do not cut into the procession.

A solid yellow line on your side of the center line means no passing; a broken yellow line means passing is allowed when safe.

A double solid yellow line means no passing in either direction; a solid white line marks the edge of a travel lane and should not be crossed except for emergencies.

You must signal at least 100 feet before a turn in a city and at least 300 feet before a turn on a highway.

A two-way left-turn lane may be used only to prepare for a left turn or a permitted U-turn, not for passing or through travel.

When passing on the left, return to the right lane only when you can see the passed vehicle in your rearview mirror and the lane is clear.

You may not pass within 100 feet of an intersection, railroad crossing, or bridge, or when a school bus has red lights flashing.

On a road with three or more lanes in one direction, drive in the right lane except when passing or preparing for a left turn.

A right turn must be made from the rightmost lane as close to the curb as practicable, and a left turn from the leftmost lane available.

Missouri's default limits: 25 mph in residential and business districts, 60 mph on rural interstates, and 70 mph on rural interstates with four or more lanes.

Use the three-second rule for following distance in good conditions; increase to four or more seconds at night, in rain, or when following motorcycles or large trucks.

The basic speed law: never drive faster than is safe for existing conditions, regardless of the posted limit.

Slow to 25 mph or less in a school zone when children are present and signs indicate; obey the posted school-zone times.

Stopping distance = perception distance + reaction distance + braking distance; wet roads roughly double braking distance and ice can multiply it many times.

Reduce speed and use a lower gear on steep downgrades; do not ride the brakes continuously.

Fine for speeding in a work zone can be doubled when workers are present; obey the reduced posted limit.

If a vehicle follows too closely, increase your own following distance rather than brake-checking.

Pedestrians: yield at crosswalks and when they are in your lane; blind pedestrians with a white cane or guide dog always have the right-of-way.

Bicycles: give at least three feet of clearance when passing; bicycles are vehicles and must follow the same traffic laws.

Motorcycles: give a full lane; do not share a lane with a motorcycle, and check blind spots before changing lanes.

Large trucks: remember no-zones (blind spots) at the front, sides, and rear; if you cannot see the truck driver's mirrors, the driver cannot see you.

A truck making a right turn may swing wide to the left first; do not pass on the right of a turning truck.

School buses: when a school bus has red lights flashing and the stop arm out, stop in both directions on an undivided road; on a divided highway, only traffic behind the bus must stop.

Emergency vehicles: yield and pull to the right; do not follow within 500 feet of a fire truck or ambulance responding to an emergency.

Slow down and move over one lane when passing stopped emergency, tow, or highway-maintenance vehicles with lights flashing, if safe to do so.

Missouri's legal limit is 0.08% BAC for drivers 21 and older; a commercial driver's limit is 0.04%.

Missouri has a zero-tolerance law: drivers under 21 with any measurable BAC (0.02% or more) can lose their license.

A DWI conviction carries license suspension, fines, possible jail time, and a requirement for an ignition interlock device for repeat offenses.

Implied consent: by driving in Missouri you agree to a chemical test; refusing can result in license revocation even without a conviction.

Alcohol impairs judgment and reaction time before you feel drunk - coffee, food, or a cold shower do not sober you up.

Prescription and over-the-counter drugs, including allergy and sleep medications, can impair driving and can support a DWI charge.

Texting while driving is illegal for all drivers in Missouri; handheld use is restricted for drivers under 21.

Distracted driving includes eating, grooming, adjusting the radio, and using a phone; even hands-free calls increase crash risk.

Missouri's Graduated Driver License: an instruction permit at age 15, an intermediate license at 16, and a full license at 18 (or after meeting requirements).

A 15-year-old permit holder must be accompanied by a licensed driver 21 or older in the front seat and complete 40 hours of supervised driving (including 10 at night) before the intermediate license.

Intermediate license holders under 18 may not drive between 1:00 a.m. and 5:00 a.m. except for school, work, or emergencies, and may carry no more than one unrelated passenger under 19.

Missouri assesses points for moving violations: 2 points for most moving violations, 4 points for DWI and certain serious offenses, and 8 points for driving while suspended.

A driver under 21 who accumulates 4 points in 12 months, or any driver who accumulates 8 points in 18 months, faces suspension.

Missouri requires minimum liability insurance: $25,000 per person and $50,000 per accident for bodily injury, and $25,000 for property damage.

Driving without proof of insurance can result in license suspension and reinstatement fees; proof of insurance is required at registration and on request by law enforcement.

Points remain on a Missouri driver record for 18 months from the date of conviction.

An octagon always means STOP; an inverted triangle always means YIELD - shape alone identifies these signs even if the face is obscured.

A pennant-shaped sign marks the start of a no-passing zone; a round sign warns of a railroad crossing ahead.

A crossbuck (X-shaped) sign marks the railroad crossing itself; yield to trains and stop if a train is approaching.

Flashing red = stop and proceed when clear (like a stop sign); flashing yellow = slow down and proceed with caution.

A red arrow means you may not turn in that direction until the arrow changes; a green arrow means the movement is protected.

Right turn on red is permitted after a complete stop unless a sign prohibits it; you must yield to traffic and pedestrians.

Orange signs and cones mark work zones; brown signs mark recreation and cultural areas; blue signs mark services such as gas and lodging.

A solid white line between lanes means lane changes are discouraged; a broken white line means lane changes are permitted when safe.

At an uncontrolled intersection, the first vehicle to arrive goes first; if two arrive at the same time, the vehicle on the left yields to the vehicle on the right.

A left-turning driver must yield to oncoming traffic going straight or turning right, and to pedestrians in the crosswalk.

A driver entering a roadway from a driveway, alley, private road, or parking lot must yield to all traffic already on the road and to pedestrians.

You must yield to emergency vehicles using lights and siren - pull to the right edge and stop; if in an intersection, clear it first.

At a roundabout, yield to traffic already circulating inside; enter to the right and do not stop inside the circle.

You must yield to pedestrians in a marked or unmarked crosswalk, and you may not pass a vehicle stopped at a crosswalk for a pedestrian.

A funeral procession with headlights on has the right-of-way; do not cut into or pass through it.

At a four-way stop, first to stop is first to go; if two stop simultaneously, the driver on the left yields to the driver on the right.

Signal at least 100 feet before turning or changing lanes; on a highway, signal at least 300 feet before a turn.

Left turns are made from the leftmost lane available and into the corresponding lane; right turns are made from the right lane as close to the curb as practicable.

Passing on the left is permitted when the line is broken yellow on your side; a solid yellow line on your side means no passing.

You may not pass within 100 feet of an intersection, railroad crossing, or bridge, or when a school bus is stopped with red lights flashing.

A center left-turn lane (two-way left-turn lane) may be entered only to prepare for a left turn or a permitted U-turn - not for passing or travel.

On a road with three or more lanes, drive in the right lane except to pass or when preparing for a left turn.

When changing lanes, check mirrors, signal, check blind spots, and yield to traffic already in the lane you want.

Do not drive in a lane marked with a bicycle symbol or in a shoulder lane unless signs permit it.

Missouri default speed limits: 25 mph in business/residential areas unless posted, 60 mph on rural interstates, 70 mph on rural interstates with four or more lanes.

Use the three-second rule for following distance in good conditions; increase to four or more seconds at night, in rain, or when following motorcycles or large trucks.

The basic speed law: never drive faster than is safe for existing conditions, regardless of the posted limit.

Slow to 25 mph or less in a school zone when children are present and signs indicate; obey the posted school-zone times.

Reduce speed and use lower gears on steep downgrades; do not ride the brakes continuously.

When entering a highway from an on-ramp or entering a work zone, adjust speed to merge with traffic and obey the reduced posted limit.

Stopping distance = perception distance + reaction distance + braking distance; wet roads roughly double braking distance, and ice can multiply it many times.

If a vehicle follows too closely, increase your own following distance rather than brake-checking.

Pedestrians: yield at crosswalks and when they are in your lane; blind pedestrians with a white cane or guide dog always have the right-of-way.

Bicycles: give at least three feet of clearance when passing; bicycles are vehicles and must follow the same traffic laws.

Motorcycles: give a full lane; do not share a lane with a motorcycle, and check blind spots before changing lanes.

Large trucks: remember no-zones (blind spots) at the front, sides, and rear; if you cannot see the truck driver's mirrors, the driver cannot see you.

A truck making a right turn may swing wide to the left first; do not pass on the right of a turning truck.

School buses: when a school bus has red lights flashing and the stop arm out, stop in both directions on an undivided road; on a divided highway, only traffic behind the bus must stop.

Emergency vehicles: yield and pull to the right; do not follow within 500 feet of a fire truck or ambulance responding to an emergency.

Slow down and move over one lane when passing stopped emergency, tow, or highway-maintenance vehicles with lights flashing, if safe to do so.

Missouri's legal limit is 0.08% BAC for drivers 21 and older; a commercial driver's limit is 0.04%.

Missouri has a zero-tolerance law: drivers under 21 with any measurable BAC (0.02% or more) can lose their license.

A DWI conviction carries license suspension, fines, possible jail time, and a requirement for an ignition interlock device for repeat offenses.

Implied consent: by driving in Missouri you agree to a chemical test; refusing can result in license revocation even without a conviction.

Alcohol impairs judgment and reaction time before you feel drunk - coffee, food, or a cold shower do not sober you up.

Prescription and over-the-counter drugs, including allergy and sleep medications, can impair driving and can support a DWI charge.

Texting while driving is illegal for all drivers in Missouri; handheld use is restricted for drivers under 21.

Distracted driving includes eating, grooming, adjusting the radio, and using a phone; even hands-free calls increase crash risk.

Missouri's Graduated Driver License: an instruction permit at age 15, an intermediate license at 16, and a full license at 18 (or after meeting requirements).

A 15-year-old permit holder must be accompanied by a licensed driver 21 or older in the front seat and complete 40 hours of supervised driving (including 10 at night) before the intermediate license.

Intermediate license holders under 18 may not drive between 1:00 a.m. and 5:00 a.m. except for school, work, or emergencies, and may carry no more than one unrelated passenger under 19.

Missouri assesses points for moving violations: 2 points for most moving violations, 4 points for DWI and certain serious offenses, and 8 points for driving while suspended.

A driver under 21 who accumulates 4 points in 12 months, or any driver who accumulates 8 points in 18 months, faces suspension.

Missouri requires minimum liability insurance: $25,000 per person and $50,000 per accident for bodily injury, and $25,000 for property damage.

Driving without proof of insurance can result in license suspension and reinstatement fees; proof of insurance is required at registration and on request by law enforcement.

Points remain on a Missouri driver record for 18 months from the date of conviction.