Which of the following is important for trailer safety during travel?

Regularly checking tire pressure and trailer connections is crucial for trailer safety during travel because these factors directly impact the vehicle's performance and safety. Proper tire pressure ensures that the tires can support the weight of the trailer effectively, reducing the risk of blowouts or poor handling on the road. Similarly, secure trailer connections are vital to ensure that the trailer remains attached to the towing vehicle, preventing potential accidents caused by detachment.

Monitoring these elements helps maintain the overall functionality and safety of the trailer, which is essential for safe travel, especially when transporting heavy loads. In contrast, the other factors do not specifically address safety and might even lead to unsafe conditions, such as driving too fast to avoid traffic or unnecessarily reducing load weight without considering the implications. Maintaining the original color and livery is also irrelevant to the safety and functionality of the trailer during travel.