Cranes today and tomorrow

Cranes lift very heavy loads in busy places, so safety is a central concern. New technology is making them safer and more efficient, and cleaner.

Safety systems today

Modern cranes carry sensors and computers that help the operator work within safe limits.

• Load moment indicators warn the operator, or stop the lift, when a load is too heavy for the arm's position.
• Wind sensors show when conditions are unsafe for lifting.
• Anti-collision systems help cranes avoid each other and nearby structures.
• Cameras give the operator a clear view of the load.

Automation

Some cranes are now operated by remote control, so the operator can stand on the ground or in a control room away from the load. Researchers and manufacturers are also developing systems that take over parts of the work, such as steadying a swinging load. People are still responsible for the lift.

Electrification

Tower cranes already run on electricity. Manufacturers are now offering battery-electric and hybrid mobile cranes, which produce less exhaust and make less noise. That is a benefit on city sites.

What stays the same

Whatever the technology, the principle of the crane is unchanged: it multiplies force so that people can build what they could not lift by hand.