How to stop a border collie chasing cars: A step by step guide.

Jun 2
7 min read

Updated: 3 days ago

A Step-by-Step Training Plan That Works

If you share your life with a border collie, Australian shepherd, German shepherd, Swiss shepherd, kelpie, or any dog with herding blood, you know their relationship with moving things is intense. Cars, bikes, joggers, and scooters can trigger a strong response. Once it starts, it feels almost impossible to interrupt.

But understanding why is the first step to changing it.

Why Herding Breeds Are Wired for Chasing Cars

Herding dogs were bred for generations to respond to movement and observe patterns. Their nervous systems are finely tuned to track, anticipate, and control moving objects. The eye, the stalk, the chase—these aren’t bad behaviours. They’re simply your dog doing what their genetics were designed to do.

When a car passes, your herding breed isn’t being difficult. They’re being a herding dog. The challenge is that a car is a large, fast, and unpredictable “stock animal.” This job can be dangerous and self-reinforcing. Every chase, even a partial one, makes the next chase more likely.

Whatever your dog practices, they get better at. So, the earlier we start building better responses, the easier this becomes.

Start at the Socialisation Stage: Build the Foundation Before the Problem Exists

The best time to address car chasing is before it becomes a habit. This is during the socialisation window, roughly four to sixteen weeks of age. Your puppy is actively learning what the world means and how to respond to it.

At this stage, we want to create a positive association between moving vehicles and good things happening with you. Your goal isn’t to make traffic invisible; it’s to make you more interesting than traffic.

The First Behaviour: Look at Me

Begin with one simple behaviour: eye contact with you. This is your foundation skill and the first link in everything that follows.

How to Teach It:

Start at home with no distractions. Stand quietly in front of your puppy or dog. Wait for them to make eye contact, mark the moment (with a clicker or a verbal “yes”), and reward them.

Once your puppy reliably offers eye contact indoors, practice in the garden, then on every walk. Gradually, calmly, and only when the behaviour is reliable in easy environments, practice where low-level movement is present, like a distant car passing or a person walking across the road.

What to Reward With:

For most herding puppies, food is a great starting reward. Once the behaviour is solid, pair eye contact with a short tug game. A brief burst of tug is a powerful reward for a breed motivated by movement and interaction. It also builds your value as a play partner, which you'll rely on heavily as your training progresses.

The rule of thumb: Use the tug reward once the behaviour is fluent and predictable, not while you’re still teaching it. Food gets the behaviour in place; the tug game makes it fun.

The goal: A dog who sees something move in the environment and chooses to look at you instead.

Build the Behaviours at Home First

Before you ever insert a trigger, both of the following behaviours need to be fluid, fast, and fun in a low-distraction environment. Rushing this stage is the most common reason training stalls later.

Behaviour One: Look at Me (DRO - Differential Reinforcement of Other Behaviour)

As above, the dog looks at you in the presence of something that would otherwise capture their attention. Reward generously. Build duration slowly. Keep sessions short (three to five minutes) and end on a win.

Behaviour Two: Let's Go (DRA - Differential Reinforcement of Alternative Behaviour)

This is one of the most powerful tools you have, and it works beautifully for herding breeds for one good reason: movement is reinforcing.

The "let's go" behaviour teaches your dog that when they hear a cue, your voice or a specific word, they spin away from whatever they were looking at and move with you at speed in the opposite direction. The movement itself becomes part of the reward.

How to Teach It at Home:

Begin in the garden with your dog on a lead or long line. Say "let's go" in an upbeat, bright tone. Wait for your dog to look toward you, turn your body, and move away briskly. Make it fun, almost like you’re playing a 'running away' game.

As your dog learns to follow and catch up to you, reward them with a short game using a flirt pole or tug. The flirt pole is ideal because it mimics the movement that already motivates them. It shifts the chase drive into a controlled interaction with you and creates genuine excitement around the "let's go" cue.

Repeat until your dog is spinning and running before you’ve even finished the words.

Why This Works So Well:

Your dog isn't being asked to suppress their drive; they're being asked to redirect it. They get to move, chase, and engage. The only difference is that the thing they're chasing is now a toy, and the thing they're moving toward is you.

Practice this until the behaviour is automatic. It should look effortless—a reflexive, happy spin-and-go the moment they hear the cue.

Inserting the Trigger: Threshold is Everything

Once both behaviours are reliable at home and in quiet environments with no triggers present, you’re ready to introduce the real thing. But here's where most people go wrong: they insert the trigger too close, too fast.

Understanding the Threshold Bubble

Every dog has what we call a threshold bubble, an invisible boundary that defines how close a trigger can come before the dog shifts from "I can think and learn" to "I cannot think at all."

For herding breeds with a practiced car-chasing history, their threshold distance and speed will vary depending on the environment. A dog who holds it together on a quiet side street may blow their threshold on a main road at 40 metres. The speed of the cars, the noise, and the unpredictability all add up.

Signs Your Dog Is Approaching Threshold:

Body stiffening or stillness
The eye stalk, a hard, fixed gaze with a lowered head
Ears shift forward
Shallow or held breath
Inability to take food or respond to cues they know well

Once a dog moves over their threshold, they are in a state of high arousal where the thinking part of the brain is effectively switched off. You can ask for a sit twenty times. You can wave chicken in their face. It won’t land. The stress hormones flooding their system mean that no meaningful learning can take place.

Working at and Below Threshold

Start well outside your dog's threshold. For most herding breeds working on car reactivity, this means beginning at a distance where the dog notices the car, but is still able to:

Take food
Respond to a familiar cue
Look back at you voluntarily

That’s your working zone. This is where learning happens.

The Sequence:

You spot the car before your dog does. This matters. Scan the environment and stay ahead.
The car appears at a distance. Your dog notices it.
Cue "look at me," and reward the moment they shift their gaze to you with a treat and praise, or your well-practiced tug game.
Immediately follow with "let's go," turn, and move away together at a brisk pace.
Play a short game with the flirt pole or tug as you move away. Movement, engagement, reward.
Return to your starting position and repeat.

Over sessions, your dog will begin to anticipate the sequence. They’ll see the car and look at you before you’ve even asked. That’s the moment you’re working toward; the trigger becomes the cue to check in with you, rather than the cue to chase.

When Your Dog Is On or Near Threshold: Scatter Feeding

Sometimes, despite your best management, a trigger appears closer than expected. Your dog's body tightens. You can feel the arousal climbing. This is not the moment to ask for eye contact or a flirt pole game; both require your dog to be thinking clearly enough to engage with you.

This is the moment for a scatter feed.

Toss a small handful of high-value treats—chicken pieces, cheese, or *Possyum—onto the ground at your dog's feet. Say "find it" in a calm, low voice.

Sniffing is a parasympathetic activity. It physiologically lowers arousal. When your dog puts their nose to the ground to search for scattered food, they are doing something that is neurologically incompatible with the locked, forward focus of a prey chase. Their body softens. Their breathing slows. The trigger loses some of its grip.

Scatter feeding won't train the behaviour. But it keeps your dog under threshold long enough to move them back to a distance where training can resume. It is a management tool, not a training tool, and knowing the difference matters.

The Full Toolkit at a Glance

Situation - Behaviour - Reward

Dog notices trigger, is under threshold - Look at me (DRO) - Short tug game

Dog is focused on you - Let's go (DRA) - Flirt pole game while moving

Dog is on or near threshold - Play 'Find it' / scatter feed - Food on the ground

Dog is between repetitions and calm - Sniff and explore - Access to environment

Managing Your Expectations

Herding breeds with a well-practised chase history are not a quick fix. You are working against both genetics and a behaviour that has been self-reinforcing, possibly for years. That’s not a reason to feel discouraged. It’s a reason to be patient, methodical, and kind to yourself and your dog.

Consistency is the ingredient that makes everything else work. Five minutes of threshold training every day will outperform one long, over-stimulating session every weekend.

Celebrate the Small Wins:

Your dog noticed the car and glanced at you. That’s worth a party.
Your dog heard "let's go" and turned before the car reached them. That’s enormous.
Your dog is calmer on walks than they were three weeks ago. That’s the long game paying off.

Management and training work together. You’re not suppressing your dog's drive; you’re giving it a better place to go. And for a herding breed, when you get that right, you’ll have a dog who is not only safer and easier to walk, but genuinely more satisfied. They’ll be working with you rather than against the world.

That’s the goal. And it’s absolutely within reach.

If you're working through car or bike reactivity with your herding breed and would like personalised support, get in touch with The Dog Behaviour Academy. We work with you and your dog, in your environment, at your dog's pace.