Installing a single arm anti-collision shock absorber usually does not require changing the vehicle's license plate and insurance information, as this device is considered a regular modification or accessory installation and does not affect the essential properties of the vehicle and the registration information on the license plate. However, here are some key points to note:

Compliance check: Before installing any modified parts, ensure that the parts comply with local traffic regulations and safety standards. Some countries or regions may have specific regulations that require modified parts to be certified or comply with specific safety standards.

Insurance terms: Although installing a single arm collision shock absorber does not require changing the insurance itself, it is recommended to check your insurance terms if you have made any modifications to the vehicle. Some insurance policies may require notification to the insurance company regarding any modifications, as modifications may affect the vehicle's risk assessment and insurance costs.

Modification impact: If the modification will affect the safety performance or vehicle category of the vehicle (such as converting a passenger car into a commercial vehicle), it may be necessary to notify the driving license management department and change the information on the driving license.

Warranty and Liability: If modifications cause malfunctions or problems with the vehicle, warranty services may be affected. In addition, if the modification leads to an accident, failure to notify the insurance company may affect the handling of claims.

Professional installation: To ensure safety and compliance, it is recommended to have a professional install the single arm anti-collision shock absorber and provide corresponding installation certificates for the insurance company or driving license management department when needed.

In summary, although installing a single arm collision shock absorber may not require changing the vehicle's license and insurance, to ensure compliance and insurance coverage, it is recommended to understand local regulations and insurance policies and notify relevant agencies when necessary.