Who goes first? Every Colorado right-of-way scenario, worked through.
Right-of-way questions are among the most-missed on knowledge tests because the rule sounds obvious until the scenario adds a second vehicle. Below is the full scenario set: the universal rule first, then the Colorado-specific version wherever Colorado law sets its own terms.
Who goes first
Funeral Procession at an Intersection
A funeral procession is passing through an intersection. The lead vehicle has entered legally; following vehicles continue with headlights or hazard lights on. What must you do?
Where state law codifies right-of-way for funeral processions, the procession may continue together through the intersection even if the signal changes after the lead vehicle enters legally. Other drivers must yield to the procession and not cut in or break the line. State coverage varies widely; many states are silent.
Colorado does not codify a funeral procession right of way. No state statute gives a procession priority at intersections or makes it an offense to drive through one; some cities, notably Denver, do so by municipal ordinance. Treat a procession as ordinary traffic, do not cut into the line, and obey any escorting officer.
Searching the full text of Title 42 of the Colorado Revised Statutes for funeral procession returns only three hits, none of which grants a right of way. Two are lighting and equipment provisions permitting special lamp or flag use in a funeral or parade. The third is C.R.S. 42-4-1008(3), which requires vehicles driven in a caravan or motorcade outside a business or residence district to leave enough space between them for an overtaking vehicle to pull in, and then exempts funeral processions from that spacing requirement. That is an exemption from a following-distance rule, not a grant of priority, and Colorado has no counterpart to the funeral-procession statutes found in many other states. The Colorado Driver Handbook contains no entry on funeral processions either. In practice, processions in Colorado are commonly escorted, and where a peace officer is directing traffic you must obey the officer's directions like any other traffic direction; some municipalities, including Denver, have adopted ordinances giving processions priority and permitting them to proceed through signals behind the lead vehicle, so the rule can differ inside city limits. None of that is state law, and drivers should not assume a Colorado procession has statutory right of way.
Active Emergency Vehicle Approaching
An emergency vehicle approaches with lights and siren on. What must you do?
Pull as far to the right as is safe, stop, and remain stopped until the emergency vehicle and any others following it have passed. Do not block intersections. On divided highways, the rules for opposing-direction traffic vary by state, described in the state-specific rule below.
On the immediate approach of an emergency vehicle using its siren or lights, yield the right of way, clear the farthest left lane where possible, pull as close as you can to the right-hand edge or curb clear of any intersection, stop, and stay there until it has passed. If you are in an intersection, drive through it first, then pull over.
C.R.S. 42-4-705(1) states the duty in full: upon the immediate approach of an authorized emergency vehicle making use of audible or visual signals, the driver of every other vehicle shall yield the right-of-way and where possible shall immediately clear the farthest left-hand lane lawfully available to through traffic, and shall drive to a position parallel to and as close as possible to the right-hand edge or curb of the roadway clear of any intersection, and shall stop and remain in that position until the emergency vehicle has passed, except when otherwise directed by a police officer. The clear-the-left-lane instruction is distinctive to Colorado and matters on a multi-lane highway: responders commonly run the left lane, so Colorado asks you to vacate it in addition to pulling right. Clear of any intersection is the other tested element: never stop inside the intersection. The Colorado Driver Handbook restates this and specifies the lights that trigger it, siren, air horn, and/or flashing red, blue, white or yellow lights, and adds the practical instruction that if you are in an intersection you drive through it and then pull over. Colorado's statute does not set a minimum following distance behind a responding emergency vehicle in this section; see 42-4-705(2) for the separate duty toward a stationary emergency vehicle.
Exiting a Driveway, Alley, or Private Road
You are pulling out of a driveway onto a public street. A pedestrian is walking on the sidewalk. What must you do?
When exiting a driveway, alley, or private road onto a public street, you must yield to all road traffic and to any pedestrian on the sidewalk you must cross. Stop at the sidewalk, let the pedestrian pass, then look both ways before pulling onto the street.
Highway On-Ramp Merge
You are entering a highway via an on-ramp. What must you do?
When entering a highway, the merging vehicle yields to mainline traffic. Match the speed of the highway traffic in the acceleration lane, look for a safe gap, signal, and merge smoothly. Do not stop on the ramp unless traffic conditions absolutely require it.
Single-Lane Roundabout, Entering
You are approaching a single-lane roundabout. A vehicle is already in the circle. What must you do?
When entering a roundabout, yield to all traffic already in the circle. Wait for a safe gap, then enter, drive counterclockwise, and exit at your intended street. Use your right turn signal as you approach your exit.
Pedestrian in a Marked Crosswalk
A pedestrian is in a marked crosswalk in your direction of travel. What must you do?
Yield to the pedestrian. Stop before the crosswalk and remain stopped until the pedestrian has cleared your half of the road and, in many states, until they have fully crossed. Specific stopping requirements and pass-on-the-left rules vary by state.
Yield, not stop. Yield the right of way to a pedestrian crossing within a crosswalk, slowing down or stopping if that is what yielding takes. There is one place Colorado does demand a full stop: if the pedestrian has an obviously apparent disability, you must come to a complete stop before proceeding.
C.R.S. 42-4-802(1) frames the crosswalk duty as a yield: when traffic control signals are not in place or not in operation, the driver shall yield the right-of-way, slowing down or stopping if need be to so yield, to a pedestrian crossing the roadway within a crosswalk when the pedestrian is on the half of the roadway the vehicle is traveling on, or is approaching so closely from the opposite half as to be in danger. That last clause is the lane scope: the duty reaches across the centerline once the pedestrian is close enough to be in danger, but it is not triggered the instant a pedestrian steps off the far curb of a wide road. A crosswalk in Colorado may be marked or unmarked; the handbook states that a crosswalk is a marked or unmarked part of a road where pedestrians have the right-of-way to cross. Two companion rules matter on the road test: 42-4-802(4) forbids overtaking and passing a vehicle that is stopped at a marked or unmarked crosswalk to let a pedestrian cross, and the handbook adds that on a multi-lane road you must stop behind that vehicle or behind the crosswalk in the adjacent lane. Outside a crosswalk the burden flips: under 42-4-803(1) a pedestrian crossing anywhere other than a marked or unmarked crosswalk must yield to vehicles. The absolute-stop duty is separate and is codified in 42-4-808(1): any driver who approaches an individual who has an obviously apparent disability shall immediately come to a full stop and take such precautions before proceeding as are necessary to avoid an accident or injury. A disability is obviously apparent if, for example, the person is using a mobility device, is assisted by a service animal, is being assisted by another person, or is walking with an obvious physical impairment. The handbook applies this to the white cane and guide dog and says you must come to a complete stop and let the person pass safely.
Left Turn on Solid Green Light
You have a solid green light and want to turn left. Oncoming traffic also has a solid green. What must you do?
On a solid green light, a left turn is permitted but not protected. You must yield to all oncoming through traffic and to any pedestrians legally crossing your turn path. Only complete the turn when the way is clear.
Yield Sign
You approach a yield sign. What must you do?
A yield sign means you must slow down, prepare to stop if necessary, and give the right of way to all crossing or through traffic before proceeding. You only stop fully if traffic conditions require it.
T-Intersection, Uncontrolled
You are on the road that ends at a T-intersection (no stop sign, no yield sign). Through traffic crosses your path on the road at the top of the T. What must you do?
At an uncontrolled T-intersection, the through road (the road at the top of the T) has the right of way. The vehicle on the terminating road yields to all traffic on the through road before turning.
Two Vehicles Meeting on a Narrow Mountain Road
On a narrow mountain road with no room for two vehicles to pass, you meet an oncoming vehicle. Who must back up?
Where state law codifies the rule, the vehicle traveling downhill must yield by backing up to a wider section, since reversing uphill is more difficult. Most state manuals are silent on this scenario; in those states, drivers should use courtesy and judgment.
The vehicle going uphill has the right of way. On a narrow mountain highway with turnouts and a grade of six percent or more, the descending vehicle yields and backs to a turnout, unless it is more practicable for the ascending vehicle to back to one instead.
C.R.S. 42-4-711(2) codifies the rule: on narrow mountain highways with turnouts having a grade of six percent or more, ascending vehicles shall have the right-of-way over descending vehicles, except where it is more practicable for the ascending vehicle to return to a turnout. Note the two conditions built into the statute, turnouts present and a grade of at least six percent; Colorado's rule is written narrower than the equivalent statute in some states, which applies to any grade. The Colorado Driver Handbook gives the practical version for drivers without the grade threshold: when vehicles meet on a steep, narrow road that is not wide enough for two vehicles, the vehicle going downhill must yield the right-of-way by backing up to a wider place or by stopping and leaving enough space for the vehicle going uphill, except where it is more practicable for the uphill vehicle to return to a wider space or turnout. Section 42-4-711(1) adds the companion mountain-driving duties: keep the vehicle under control and as near to the right-hand edge as reasonably possible, and sound the horn when approaching any curve where the view is obstructed within two hundred feet, unless you are driving entirely to the right of the center of the roadway. Violation of the section is a class A traffic infraction.
Uncontrolled Intersection, Sequenced Arrival
Two vehicles approach an uncontrolled intersection at different times (no stop signs, no signals, no yield signs). Who proceeds first?
At an uncontrolled intersection, the first vehicle to arrive has the right of way. The second vehicle yields and waits for the first to clear.
2-Way Stop, Stopped Vehicle Yields to Cross Traffic
You are stopped at a stop sign. The cross street has no stop sign. When can you proceed?
At a 2-way stop, the cross street has the right of way and does not stop. You must wait until the intersection is clear in both directions and you can proceed without forcing other drivers to slow or change course.
Motorist Turning Right Across a Bike Lane
You want to turn right at the next intersection. There is a cyclist in the bike lane to your right. What must you do?
Yield to the cyclist before crossing the bike lane. Look over your right shoulder and check your right-side mirror, signal, and slow until you can confirm no cyclist is in or approaching your turn path. Begin the turn only when the bike lane is clear.
4-Way Stop, Sequenced Arrival
Two vehicles arrive at a 4-way stop at different times. Who proceeds first?
The first vehicle to come to a complete stop has the right of way. The second vehicle waits for the first to clear the intersection, then proceeds. Each subsequent vehicle proceeds in the order it stopped.
Pedestrian at an Unmarked Crosswalk
A pedestrian is crossing at an intersection where there are no painted crosswalk lines. What must you do?
Every public-road intersection has an implied crosswalk, marked or not. Yield to a pedestrian crossing at the unmarked crosswalk just as you would at a marked one. State coverage of unmarked-crosswalk rules varies; some statutes only protect marked crosswalks explicitly.
Yield, not stop. Yield the right of way to a pedestrian crossing within a crosswalk, slowing down or stopping if that is what yielding takes. There is one place Colorado does demand a full stop: if the pedestrian has an obviously apparent disability, you must come to a complete stop before proceeding.
C.R.S. 42-4-802(1) frames the crosswalk duty as a yield: when traffic control signals are not in place or not in operation, the driver shall yield the right-of-way, slowing down or stopping if need be to so yield, to a pedestrian crossing the roadway within a crosswalk when the pedestrian is on the half of the roadway the vehicle is traveling on, or is approaching so closely from the opposite half as to be in danger. That last clause is the lane scope: the duty reaches across the centerline once the pedestrian is close enough to be in danger, but it is not triggered the instant a pedestrian steps off the far curb of a wide road. A crosswalk in Colorado may be marked or unmarked; the handbook states that a crosswalk is a marked or unmarked part of a road where pedestrians have the right-of-way to cross. Two companion rules matter on the road test: 42-4-802(4) forbids overtaking and passing a vehicle that is stopped at a marked or unmarked crosswalk to let a pedestrian cross, and the handbook adds that on a multi-lane road you must stop behind that vehicle or behind the crosswalk in the adjacent lane. Outside a crosswalk the burden flips: under 42-4-803(1) a pedestrian crossing anywhere other than a marked or unmarked crosswalk must yield to vehicles. The absolute-stop duty is separate and is codified in 42-4-808(1): any driver who approaches an individual who has an obviously apparent disability shall immediately come to a full stop and take such precautions before proceeding as are necessary to avoid an accident or injury. A disability is obviously apparent if, for example, the person is using a mobility device, is assisted by a service animal, is being assisted by another person, or is walking with an obvious physical impairment. The handbook applies this to the white cane and guide dog and says you must come to a complete stop and let the person pass safely.
Multi-Lane Roundabout, Entering
You are approaching a multi-lane (two-lane) roundabout. What must you do differently from a single-lane roundabout?
At a multi-lane roundabout, yield to all traffic in both circulating lanes before entering. Choose your lane on approach based on your destination (right lane to exit at the first or second street, left lane to go further). Do not change lanes while inside the circle. Signal right before exiting.
Uncontrolled Intersection, Simultaneous Arrival
Two vehicles arrive at an uncontrolled intersection at the same time. Who proceeds first?
When two vehicles arrive at an uncontrolled intersection simultaneously, the vehicle on the right has the right of way. The vehicle on the left yields.
4-Way Stop, Simultaneous Arrival from Perpendicular Directions
Two vehicles arrive at a 4-way stop at the same moment, on perpendicular roads. Who proceeds first?
When two vehicles arrive at a 4-way stop at the same time on perpendicular roads, the vehicle on the right has the right of way. The vehicle on the left yields and waits for the right-hand vehicle to clear the intersection.
Pedestrian with a White Cane or Guide Dog
A pedestrian carrying a white cane or accompanied by a guide dog is at the curb or in the crosswalk. What must you do?
All states require drivers to yield to pedestrians who are blind or visually impaired and identifiable by a white cane or guide dog. Stop and wait until the pedestrian has fully cleared the roadway, regardless of marked-vs-unmarked crosswalk distinctions. Many states impose elevated penalties for failure to yield in this situation.
Yield, not stop. Yield the right of way to a pedestrian crossing within a crosswalk, slowing down or stopping if that is what yielding takes. There is one place Colorado does demand a full stop: if the pedestrian has an obviously apparent disability, you must come to a complete stop before proceeding.
C.R.S. 42-4-802(1) frames the crosswalk duty as a yield: when traffic control signals are not in place or not in operation, the driver shall yield the right-of-way, slowing down or stopping if need be to so yield, to a pedestrian crossing the roadway within a crosswalk when the pedestrian is on the half of the roadway the vehicle is traveling on, or is approaching so closely from the opposite half as to be in danger. That last clause is the lane scope: the duty reaches across the centerline once the pedestrian is close enough to be in danger, but it is not triggered the instant a pedestrian steps off the far curb of a wide road. A crosswalk in Colorado may be marked or unmarked; the handbook states that a crosswalk is a marked or unmarked part of a road where pedestrians have the right-of-way to cross. Two companion rules matter on the road test: 42-4-802(4) forbids overtaking and passing a vehicle that is stopped at a marked or unmarked crosswalk to let a pedestrian cross, and the handbook adds that on a multi-lane road you must stop behind that vehicle or behind the crosswalk in the adjacent lane. Outside a crosswalk the burden flips: under 42-4-803(1) a pedestrian crossing anywhere other than a marked or unmarked crosswalk must yield to vehicles. The absolute-stop duty is separate and is codified in 42-4-808(1): any driver who approaches an individual who has an obviously apparent disability shall immediately come to a full stop and take such precautions before proceeding as are necessary to avoid an accident or injury. A disability is obviously apparent if, for example, the person is using a mobility device, is assisted by a service animal, is being assisted by another person, or is walking with an obvious physical impairment. The handbook applies this to the white cane and guide dog and says you must come to a complete stop and let the person pass safely.
4-Way Stop, Opposing Vehicles, One Turning Left
Two vehicles face each other at a 4-way stop. Both stop at the same time. One intends to go straight (or turn right); the other intends to turn left. Who proceeds first?
When opposing vehicles arrive at a 4-way stop simultaneously and one intends to turn left, the through (straight) or right-turning vehicle has the right of way. The left-turning vehicle yields until oncoming traffic clears.
What the signal means
Left Turn on Green Arrow
You have a green left-turn arrow. What does this mean?
A green left-turn arrow gives you a protected turn. Oncoming traffic has a red signal and is required to stop. Proceed through the turn while watching for pedestrians who may still be in the crosswalk.
Flashing Red Signal
You approach an intersection with a flashing red signal. What must you do?
Treat a flashing red signal exactly as you would a stop sign: come to a complete stop, yield to all cross traffic, and proceed only when the way is clear.
Flashing Yellow Signal
You approach an intersection with a flashing yellow signal. What must you do?
A flashing yellow signal warns you to slow down and proceed with caution. You do not need to stop. Watch for cross traffic and pedestrians, especially since drivers on the cross street may have a flashing red and may be entering the intersection.
What the law requires of you
School Bus with Red Flashers Active
A school bus has stopped on the road ahead with red lights flashing and the stop arm extended. What must you do?
On an undivided road, all vehicles in both directions must stop and remain stopped until the bus turns off its red flashers, retracts the stop arm, and begins to move. On a divided highway, opposing-direction traffic may be exempt depending on the median configuration; the state-specific rule below describes when the exemption applies.
Stop at least 20 feet before you reach a school bus that is stopped with its red lights flashing, whether you are meeting it or overtaking it, and stay stopped until the red lights stop flashing. You do not have to stop if the bus is on a different roadway of a highway with separate roadways.
C.R.S. 42-4-1903(1)(a) requires the driver of a motor vehicle upon any highway, road, or street, upon meeting or overtaking from either direction any stopped school bus, to stop at least twenty feet before reaching the bus if the visual signal lights have been actuated, and not to proceed until those lights are no longer being actuated. The twenty-foot buffer is a Colorado-specific number worth memorizing. The divided-highway exception in 42-4-1903(4) is broader than the handbook suggests: a driver upon a highway with separate roadways need not stop upon meeting or passing a school bus that is on a different roadway, and the statute defines a highway with separate roadways as one divided into two or more roadways by a depressed, raised, OR PAINTED median or other intervening space serving as a clearly indicated dividing section or island. A painted median therefore counts in Colorado. The Colorado Driver Handbook states the exception more narrowly, as a median or other physical barrier separating the bus from your vehicle; where the two differ, the statute governs. Amber lights are the pre-warning stage and carry no stop duty: under 42-4-1903(2)(c) the alternating flashing yellow lights are actuated at least two hundred feet before the point where the bus will stop, and the red lights are actuated only when the bus is actually stopped. Note also that if a school bus is one that is not required to carry visual signal lights (a small passenger-type vehicle seating fifteen or fewer), you must still stop when it stops to receive or discharge schoolchildren.
Cyclist at a Stop Sign
A cyclist approaches a stop sign. Must they come to a full stop?
By default, cyclists must obey stop signs the same as motor vehicles: come to a full stop, yield to cross traffic, then proceed. Several states permit the "Idaho stop" (also called "safety stop" or "stop-as-yield"), which allows a cyclist to treat a stop sign as a yield sign when safe. The state-specific rule below describes the local treatment.
Permitted. Colorado is a safety stop state. A cyclist 15 or older (or under 15 with an adult) may treat a stop sign as a yield: slow to 10 mph or less, stop if safety requires it, yield to anyone in or approaching the intersection, then roll through. A red light still requires a full stop.
C.R.S. 42-4-1412.5 makes the safety stop statewide and supersedes conflicting local ordinances. Under 42-4-1412.5(2)(a)(I), a person fifteen years of age or older (or under fifteen and accompanied by an adult) operating a low-speed conveyance and approaching a controlled intersection with a stop sign shall slow down and, if required for safety, stop before entering; if a stop is not required for safety, the rider shall slow to a reasonable speed and yield the right-of-way to any traffic or pedestrian in or approaching the intersection, and may then cautiously turn or proceed through without stopping. Reasonable speed is defined as ten miles per hour or less, and a municipality or county may raise that ceiling to twenty miles per hour if it posts signs saying so at the intersection. Low-speed conveyance covers bicycles, electrical assisted bicycles, and electric scooters, among other non-motor-vehicle conveyances. The red-light half is different and is where riders get it wrong: under 42-4-1412.5(2)(b) a rider approaching an illuminated red traffic control signal must STOP before entering the intersection and yield to all other traffic and pedestrians, and only then may cautiously proceed straight through or turn right; the rider may not proceed or turn right if an oncoming vehicle is turning or preparing to turn left across their path. A left turn on red is allowed only onto a one-way street, only after stopping and yielding, and not if an oncoming vehicle is preparing to turn right. Drivers should expect lawful rolling stops by cyclists at Colorado stop signs and should not read a rider's failure to stop as a violation.
Stopped Emergency or Disabled Vehicle on the Shoulder
You see an emergency vehicle stopped on the shoulder with lights flashing, or a disabled vehicle with hazards on. What must you do?
Move Over laws require you to change lanes away from the stopped vehicle when safe to do so. If you cannot change lanes, slow significantly below the posted speed limit and pass with extra caution. Specifics on which vehicles trigger the law and the required speed reduction vary by state.
When you approach any stationary vehicle on the shoulder showing emergency, tow, utility, or plain hazard lights, move over one full lane away if there is a lane in your direction to move into. If there is not, or you cannot move over safely, slow down: 25 mph or less where the speed limit is under 45, and 20 mph below the limit where it is 45 or higher.
C.R.S. 42-4-705(2)(a) covers four classes of stationary vehicle: an authorized emergency vehicle (including a port of entry vehicle) showing flashing red, blue, or white lights; a towing carrier vehicle showing flashing yellow lights; a public utility service vehicle (or its authorized contractor) showing flashing amber lights; and, since the 2020 amendment, any stationary motor vehicle giving a hazard signal by displaying alternately flashing lights or warning lights. That last class means the duty is not limited to responders: an ordinary disabled car with its four-way flashers on triggers it. On a highway with at least two lanes going your direction on your side, subsection (2)(b) makes the lane change mandatory, not optional, unless a peace officer directs otherwise or weather, road conditions, or the immediate presence of traffic makes it impossible. If you cannot move over, or the road has only one lane your way, subsection (2)(c) requires a reduced, safe speed, and it fixes presumptively safe numbers: 25 mph or less if the limit is under 45 mph, and 20 mph below the limit if the limit is 45 mph or more. Two related duties sit in the same section: subsection (2.5) applies the same move-over-or-slow-down rule to maintenance, repair, or construction vehicles moving at less than 20 mph, and subsection (2.6) applies it to a vehicle stopped on the side of the highway having chains installed. A violation is careless driving; if it proximately causes bodily injury it is a class 1 misdemeanor traffic offense, and if it causes a death it is a class 6 felony.
Right Turn on Red
You are stopped at a red light and want to turn right. What must you do?
After a complete stop at the red light, you may turn right unless a sign prohibits the turn. Yield to all cross traffic and pedestrians in the crosswalk before proceeding. Some states or specific intersections prohibit right-on-red by default; the state-specific rule below describes the local default.
Right on red is allowed statewide after a complete stop, unless a posted sign prohibits it. You may also turn left on red from a one-way street onto another one-way street after stopping, unless a sign there prohibits it. Either way, yield to pedestrians in the crosswalk and to traffic already using the intersection.
C.R.S. 42-4-604(1)(c)(I) requires a stop at a steady circular red, then allows two exceptions. Sub-subparagraph (A) allows the right turn after stopping and yielding, unless state or local road authorities have prohibited it by ordinance or resolution AND erected an official sign at that intersection. Sub-subparagraph (B) allows the left turn on red when you are already on a one-way street and are turning onto a one-way street whose traffic moves to your left, subject to the same sign-plus-ordinance exception. Sub-subparagraph (C) is important for readers: the statute expressly strips local authorities of any discretion beyond what it grants, so Colorado has no city-wide or jurisdiction-wide ban comparable to New York City's; a prohibition has to be signed at the specific intersection. A steady RED ARROW is different: C.R.S. 42-4-604(1)(c)(III) requires you to stop and remain standing until the arrow movement is permitted, so no turn on a red arrow.
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