why do tractor trailers have spikes

Tractor trailers are a common sight on highways and roads. These heavy vehicles are used to transport goods across long distances, making them a vital component of the logistics industry. However, one thing that often catches the attention of motorists is the presence of spikes on the wheels of tractor trailers. These spikes are not present on all trucks, so why are they added to some?

Security and Safety

One of the main reasons tractor trailers have spikes is for security and safety purposes. These spikes, also known as “stingers” or “spiders,” are designed to immobilize a truck if it is stolen or hijacked. The spikes are usually mounted on the wheels of the trailer, and when activated, they penetrate the tires of the truck, making it impossible to move. This technology is a deterrent to would-be thieves and hijackers and helps to protect the valuable and often expensive goods being transported.

Heavy loads

Tractor trailers also transport heavy loads, so stingers can act as a safety feature in the event of tire blowouts or sudden tire deflation. The spikes can help to maintain traction, preventing the truck from losing control and causing an accident. The spikes can also help the truck to stop more effectively in the case of an emergency.

Legal Requirements

In some parts of the world, the use of stingers on the wheels of a tractor trailer is a legal requirement. Governments in countries such as South Africa and Australia have made it mandatory for trucks to have stingers fitted as a security and safety feature. In the United States, it is not a federal requirement, but some states, such as California, require all hazardous material transporter trucks to have stingers.

Negative Effects

Although the use of stingers on tractor trailers has safety benefits, there are also some negative effects. For example, stingers can cause damage to the road surface and other vehicles. When a trailer with stingers moves slowly or turns on the road, the spikes can dig into the asphalt or concrete, causing cracks and potholes. They can also puncture the tires of other vehicles on the road. Additionally, stingers may prolong the time taken to change tires or perform maintenance on the truck, causing delays in the transport of goods.

Conclusion

In conclusion, tractor trailers have spikes, also known as stingers, on their wheels for safety, security, and legal reasons. The spikes can prevent theft, immobilize the truck if stolen, and provide extra grip on the road. However, they do come with negative effects, such as damage to the road surface and other vehicles. It is, therefore, necessary to weigh the pros and cons of using stingers on tractor trailers to determine whether they are a worthwhile addition.