In order to further reduce radiation exposure during maintenance work at nuclear power plants, this study focuses on an appropriate interface design for presenting radiation strength information to workers through experiments on participants. The concept of presenting radiation information in real time with a vibration device worn by workers and encouraging them to use the information to avoid radiation exposure was studied. In a work area where radiation distribution was reproduced in a virtual reality space on a personal computer, the participants performed tasks simulating maintenance work and took actions to avoid radiation exposure based on the information received from the vibration device. Experiments were conducted to compare vibration amplitude modulation, vibration interval modulation, and non-vibration (no information presentation) as radiation information presentation methods. The results showed that the method of expressing the radiation strength information by amplitude modulation tended to be better for reducing the exposure dose. On the other hand, it was found that people who tend to spend a lot of time moving to avoid radiation exposure may prefer not to receive information from the vibration device.