A barrier gate is any automated physical barrier that controls vehicle or pedestrian passage at an entrance. The term is usually applied to boom barriers at parking lots and toll roads, but the wider barrier-gate family also includes flap barriers, rising bollards, and high-security tyre killers. Choosing the right type depends on traffic volume, the mix of vehicles and pedestrians, and the security level required.

Boom barriers (the standard vehicle barrier)

A boom barrier raises and lowers a horizontal arm to block or release a lane. It is the most common barrier gate for parking lots, gated communities, and toll plazas. Modern units use either an AC motor or a DC servo motor for faster, softer motion.

Flap and swing barriers

While boom barriers stop vehicles, flap barriers and swing barriers manage pedestrian flow at the same entrance. They are often paired with a boom barrier so cars and people are controlled by one access system.

Rising bollards

Automatic bollards sink flush with the ground when open and rise to block a lane. They are favored where a boom arm is impractical (historic streets, pedestrian zones) but vehicle access must occasionally be granted.

Tyre killers (tyre shredders)

A tyre killer is a high-security vehicle barrier with retractable spikes. It stops unauthorized vehicles from ramming a checkpoint and is used at military, border, and critical-infrastructure sites.

Which type should you specify?

Match the barrier to the lane: boom for standard vehicle lanes, flap/swing for pedestrian lanes, bollards for aesthetic urban control, and tyre killers only where hostile-vehicle protection is mandatory. See our complete barrier gate guide for a full selection framework.

Frequently Asked Questions

What is the difference between a boom barrier and a bollard?

A boom barrier uses a rising arm across the lane; a bollard is a post that rises from the ground. Bollards leave the roadway clear when retracted and suit pedestrian-friendly sites.

Can flap barriers stop vehicles?

No. Flap and swing barriers control pedestrians. To stop vehicles at the same entrance, pair them with a boom barrier or bollard.

Where are tyre killers used?

Tyre killers are deployed at high-security checkpoints such as border crossings, embassies, and power plants where forced entry by vehicle must be prevented.