The 9 Most Common Zip Line Mistakes

The purpose of identifying the nine most common mistakes seen on high-speed zip lines is to eliminate them. From an operational standpoint, addressing these factors is critical because doing so will significantly decrease participant risk.

The fortunate byproduct of fixing these mistakes—or preventing them in the first place—is that you will also dramatically improve throughput, rider satisfaction, and overall profitability. A single incident on your zip line involving a customer could put you out of business. Mitigating risk should be your highest priority, followed closely by increasing the rider experience and optimizing your commercial returns.

Mistake #1: Operating without an EAD

High-speed zip lines—where arrival speeds exceed 25 mph (40 kph)—are mandated by safety standards (such as ACCT and EN 15567) to have both a primary braking system and an Emergency Arrest Device (EAD). An EAD is the apparatus that stops a rider safely should the primary brake be compromised by operator error, equipment fatigue, or improper installation.

The purpose of an EAD is to prevent serious injury resulting from a primary failure. Such a device must require no action by the participant to engage. Operating without one exposes your entire business to severe legal and operational liability.

Mistake #2: Lack of orientation constraint

EADs stop riders more abruptly than primary braking devices. They can be dangerous to riders coming into the braking area in any orientation other than forward. High-speed arrivals create upswing upon impact; arriving facing backward can place a rider's head in dangerous proximity to the zip line cable.

Install rider trolleys that physically constrain rider orientation. Active options, such as a trolley with a pivoting handlebar, naturally follow the rider's motions during contact, keeping them facing forward and safely away from impact zones.

Mistake #3: Permitting hands in the impact area

When braking on a high-speed zip line, a rider should never be able to place their hands or body parts into the impact area. One of the most dangerous culprits is hand braking. Expecting riders to use a gloved hand to slow themselves introduces significant liability, as participants must be within reach of the cable, brake trolley, and other hardware.

To mitigate this, implement strategies that put distance between the rider and the zip line, ensure front-facing orientation, and completely remove hand-braking from high-speed scenarios.

Mistake #4: Manual braking engagement

The most effective and least error-prone way to arrest riders is an automated braking system. Relying on staff to manually catch or belay each participant puts the entire responsibility of safety on human operators. If an operator misses the belay, the rider will be abruptly jolted by the EAD.

Automated systems leave the control to the brake itself, automatically resetting the trolley for the next rider. This significantly increases participant throughput and ensures a pleasant braking experience every time.

Mistake #5: Failing to assess between riders

Even with the best automated braking systems available, operators must visually check the system between riders. If a rider is still on the line when the next launches, a high-speed collision is highly probable. Similarly, if the brake has not correctly reset, the next rider could approach the landing area without a primary braking mechanism.

Staff training must explicitly mandate checking that the rider is properly disembarked, ensuring the brake has correctly reset, and confirming the impact area is clear of all debris or tangled lines.

Mistake #6: Neglecting regular hardware inspections

Regular inspections are a non-negotiable operational protocol for all braking systems. Depending on volume and operating circumstances, this requires daily, weekly, and formal annual protocols. Failure to complete these recertifications renders the device legally unsafe for operation.

• Check ropes and textiles (brake lines, webbing) for signs of fatigue and wear.
• Inspect all hardware (brake device, trolleys, pulleys) for damage or debris.
• Ensure carabiners and quick links are closed and properly oriented.
• Verify that wire rope clips are correctly torqued according to specifications.

Mistake #7: Unseen Friction

Using trolleys not designed for impact braking, incorrect rope diameters, or improper pulleys applies excess, hidden friction to the line. This unseen resistance often causes riders to fall short of the landing area, requiring manual retrievals, or causes an unexpectedly jarring stop that ruins the customer experience.

Mistake #8: Diminished Experience

Customer satisfaction dictates repeat business. If a rider requires retrieval, impacts a brake trolley roughly, or is stuck waiting while an operator performs a rescue, the experience is severely diminished. Ensuring smooth, comfortable deceleration and reliable arrivals is the single greatest thing you can do to drive word-of-mouth growth.

Mistake #9: Designing for affordability over performance

Many lines are designed for up-front affordability rather than performance, resulting in too much "belly" or sag. If designed for the heaviest rider, a light rider falls short; if designed for the lightest rider, heavy riders arrive with excess velocity. Proper high-tension line engineering ensures consistent arrival speeds regardless of participant weight or headwinds.

Protect Your Riders and Your ROI

There are hidden factors that impede the efficiency and diminish the profitability of many zip line operations. By systematically engineering out these errors, you not only comply with global safety standards but actively reduce OPEX and labor costs.