Rally co-driver calls are a complete language — developed over decades, refined by thousands of crews, and designed to communicate everything a driver needs to know about a road in as few syllables as possible.

If you've listened to a WRC onboard and heard "right 4 tightens don't cut, 80, left 3 long over crest" and thought what does any of that mean? — this guide breaks down every term.

The short answer: Co-driver calls combine three elements: a direction and number (the corner severity), one or more modifiers (how the corner behaves), and a distance to the next feature. Together, they encode the complete character of the road in a spoken shorthand that the driver processes in real time at 150+ km/h.

Table of Contents

• How Co-Driver Calls Are Structured
• Corner Direction and Severity Calls
• Shape Modifiers: How the Corner Behaves
• Hazard Modifiers: What to Watch Out For
• Road Feature Calls
• Distance Calls: How Far to the Next Feature
• Warning and Caution Calls
• Complete Co-Driver Calls Reference Table
• How Co-Driver Calls Sound in Practice
• Co-Driver Calls in Apps and Games
• FAQ

How Co-Driver Calls Are Structured

Every co-driver call follows the same pattern:

[Direction] [Severity Number] [Modifier(s)], [Distance], [Next call]

For example: "Right 3 tightens, 80, left 4 long"

• Right 3 — right-hand corner, severity 3 (tight)
• tightens — the corner gets sharper through the turn
• 80 — 80 meters to the next feature
• left 4 long — left-hand corner, severity 4 (medium), continues for an extended distance

The structure is consistent, predictable, and rapid. A co-driver delivers these calls in a steady rhythm — each call landing a few seconds before the driver reaches that feature. The rhythm matters as much as the words.

Corner Direction and Severity Calls

The foundation of every call is direction plus severity number.

Direction is simply left or right — which way the road turns.

Severity uses the 1-6 rally number scale:

Half-steps add precision: 3+ (slightly easier than a 3) and 3- (slightly tighter). Professional crews use these constantly.

Some corners are called without a number:

• "Hairpin left/right" — tighter than a 1. Near-stationary.
• "Square left/right" — a sharp 90-degree turn, often at an intersection.
• "Kink left/right" — barely a deviation. Even less than a 6.

Shape Modifiers: How the Corner Behaves

Corner numbers tell you severity. Shape modifiers tell you how the corner evolves as you drive through it. These are the calls that prevent accidents.

Tightens

Meaning: The corner starts at one severity and gets sharper through the turn.

"Right 4 tightens" might enter as a 4 but finish as tight as a 3 or 2.

Why it matters: Tightening corners are the most dangerous corners on any road. Your entry speed feels right for the opening radius, but halfway through, the corner demands more deceleration than you planned for. This is the leading cause of single-vehicle corner exits — on rally stages and public roads alike.

What to do: Enter slower than the initial severity suggests. If it says "4 tightens," treat the entry more like a 3.

Opens

Meaning: The opposite of tightens. The corner eases as you go through it.

"Left 3 opens" starts tight but the radius increases, letting you accelerate earlier than a standard 3.

What to do: You can begin applying throttle earlier than the number suggests. The road is giving you room.

Long

Meaning: The corner maintains its severity for a longer-than-typical distance.

"Right 4 long" — a medium corner that continues and continues. Don't try to accelerate early.

What to do: Maintain your corner speed. The exit is further away than you'd expect for this severity.

Short

Meaning: A brief corner — over quickly.

"Left 3 short" — a tight corner, but it's done fast. The road straightens almost immediately.

What to do: The corner demands the same entry speed but the commitment is brief. Useful for planning — a short 3 before a long straight is different from a long 3.

Late

Meaning: The apex (tightest point) is past the midpoint of the corner.

"Right 3 late" — the corner looks manageable at first, then hits its tightest point later than expected.

What to do: Turn in later than instinct suggests. Run a wider entry. Let the corner come to you.

Sudden

Meaning: The corner arrives abruptly, with little visual warning.

"Sudden left 3" — you won't see this corner until you're nearly on it. Maybe it's hidden behind a crest, a tree line, or a building.

What to do: Prepare early. This call exists specifically because the visual cues are missing.

Double / Triple

Meaning: Two or three corners of the same type in rapid succession.

"Double caution right 2" — two tight right-handers, one after another, with minimal gap.

What to do: Treat the whole sequence as one extended feature. Your speed needs to work for both.

Hazard Modifiers: What to Watch Out For

These calls warn about specific dangers at or near a corner.

Don't Cut

Meaning: Do NOT clip the inside of the corner. There's a hazard on the inside edge — a ditch, rock, bank, stump, or drop-off.

In rally, cutting the inside apex is standard technique for speed. "Don't cut" explicitly cancels that instinct.

What to do: Run a wider line. Stay off the inside edge entirely.

Cut

Meaning: The inside IS safe and you can — or should — clip the apex.

"Left 3 cut" — run a tight line. The inside is clean and clipping it shortens your path.

What to do: Use the inside of the corner. It's there for you.

Keep In

Meaning: Stay tight to the inside of the corner. The outside is the dangerous side — a cliff edge, ditch, embankment, or soft shoulder.

What to do: Prioritize staying in. A wider line puts you at risk.

Keep Out

Meaning: Stay to the outside of the corner. The inside has a hazard.

Similar to "don't cut" but stronger — implies the entire inside of the corner is compromised, not just the apex.

Narrows

Meaning: The road gets tighter ahead. Often before a bridge, gate posts, cattle grid, or built-up area.

What to do: Reduce speed and prepare for reduced road width.

Slippy

Meaning: Reduced grip. Mud, moisture, polished surface, oil, or debris.

What to do: Reduce speed more than the corner number alone would suggest. Your tyres have less to work with.

Bumpy / Rough

Meaning: Uneven road surface. Potholes, broken tarmac, heaves, or corrugations.

What to do: Avoid hard braking or aggressive steering on the bumpy section — the car will be unsettled.

Road Feature Calls

These describe features in the road surface or profile.

Crest

Meaning: A rise in the road where visibility is lost over the top. The car goes light as suspension unloads.

"Over crest" — the corner passes over a rise. "Big crest" — a pronounced rise. "Small crest" — subtle but worth knowing.

Why it matters: A corner over a crest is harder than the same corner on flat ground. Your car is lighter at the top of the crest, which means less grip at exactly the moment you need it.

Jump

Meaning: A severe crest where the car may leave the ground.

In rally, jumps are common and planned for. On public roads, knowing a crest exists means you won't be surprised by the car going light.

Dip

Meaning: A depression in the road. The car compresses into it, then the suspension extends on the far side.

Why it matters: Braking efficiency changes as the car's weight shifts through the dip. Dips before corners can upset the car's balance.

Water / Water Splash

Meaning: Standing water crossing the road.

What to do: Straighten the steering, don't brake hard through it, and expect drag and potential aquaplaning.

Junction

Meaning: An intersection or side road meeting the main road.

Why it matters: On rally stages, junctions require navigation awareness. On public roads, junctions mean potential crossing traffic.

Bridge

Meaning: A bridge — often with a surface change (concrete instead of tarmac) and narrowing.

Distance Calls: How Far to the Next Feature

Between corners, the co-driver calls the distance in meters to the next feature. These numbers determine your exit strategy from every corner.

The critical ones: "into" and "and" change everything. "Right 3, 30, left 2" is a completely different challenge from "right 3, 200, left 2." The short-distance calls tell you the next corner is essentially part of the current one — you need to plan a line and speed that works for both.

Warning and Caution Calls

These are standalone warnings that don't attach to a specific corner.

Caution

Meaning: General warning for a tricky section. Could be a deceptive corner combination, a surface change, a narrow section, or anything that needs extra attention.

"Caution" is the co-driver's way of saying: pay extra attention here.

Danger

Meaning: Stronger than caution. A seriously hazardous section — cliff edge, massive drop-off, known accident spot.

Some crews use "double caution" or "triple caution" instead of "danger" — escalating severity.

Deceptive

Meaning: The corner doesn't look like what it is. It might appear easier than it actually is, or the visual cues are misleading.

"Deceptive right 3" — this corner looks like a 4 or 5 from a distance but is actually a 3. Don't be fooled by the entry.

Finish / Stop

Meaning: The end of the stage in rally. "100, finish" or "200, stop."

Complete Co-Driver Calls Reference Table

Here's every major co-driver call in one place:

How Co-Driver Calls Sound in Practice

Reading the definitions is one thing. Hearing how they combine into a real-time stream is another.

Here are three example sequences — read them aloud to feel the rhythm:

Flowing Mountain Road

"Right 4, 80, left 3 tightens don't cut, into right 3, 100, left 5 over crest"

Translation: A medium right, then 80m to a tight left that gets sharper with a hazard on the inside, immediately into another tight right, then 100m to a fast left passing over a rise.

Technical Hairpin Section

"Caution, left 2 long, 30, hairpin right, 40, left 1 opens, 60, right 3"

Translation: Warning — a long very tight left, then just 30m to a hairpin right, 40m to a left hairpin that eases, 60m to a tight right.

Fast Section with Sudden Hazard

"Right 5, 150, left 6, 200, sudden right 3 don't cut, 80, left 4 slippy"

Translation: A fast right, long straight, a flat left, another long straight, then a tight right that appears with no warning and has a hazard on the inside, 80m to a slippery medium left.

Notice how the rhythm carries information. Short distances between calls compress the pace — the co-driver speaks faster because the features arrive faster. Long distances create breathing room. This cadence is what makes a great co-driver.

Co-Driver Calls in Apps and Games

The co-driver call system isn't just for rally anymore.

Rally video games — EA WRC, Dirt Rally 2.0 — use simplified versions of these calls. The core system (direction + number + basic modifiers) is accurate. Games typically omit the subtler modifiers like "late," "deceptive," or half-steps, but the fundamentals transfer directly.

Rods brings the same co-driver call system to any public road. It uses the standard rally number scale, calls out tightening bends, flags surface changes and hazards, and delivers everything through audio so your eyes stay on the road. The language is the same — "right 3 tightens" in Rods means exactly what it means in a WRC stage.

Rods also offers a simple mode that replaces numbers with easy/medium/hard for drivers who prefer plain-language calls. Both modes work offline on iOS and Android.

For the full guide to pace notes and how the system works end-to-end, that pillar article covers the complete picture.

FAQ: Co-Driver Calls Meaning

What does "tightens" mean in co-driver calls? The corner gets sharper as you drive through it. "Right 4 tightens" starts as a medium bend but finishes as tight as a 3 or 2. Enter slower than the initial number suggests — tightening corners are the most dangerous type because your entry speed may be too fast for the exit radius.

What does "don't cut" mean in rally? Do not clip the inside of the corner. There's a hazard on the inside edge — a ditch, rock, bank, or drop-off. In rally, cutting inside is normal for speed; "don't cut" explicitly overrides that instinct. Run a wider line and stay off the inside.

What does "into" mean between co-driver calls? Zero gap. The next corner begins as the current one ends, with no straight section between them. "Right 3, into left 4" means you exit the right and immediately enter the left — you need a line and speed that works for both corners as a combined sequence.

What is the difference between "caution" and "danger"? Caution means pay extra attention — a tricky section, deceptive corner, or surface change. Danger is stronger — a serious hazard like a cliff edge or massive drop-off. Some crews escalate with "double caution" or "triple caution" instead of using "danger."

Do co-driver calls work the same in rally games? The core system is identical — direction, number, basic modifiers. Games simplify the vocabulary (fewer modifiers, no half-steps) and use fixed timing instead of adaptive delivery. But "left 3 tightens don't cut" means the same thing in EA WRC as it does in a real WRC stage.