Rule changes announced by the Trump administration last week could allow automakers to report fewer crashes involving self-driving cars, with Tesla potentially emerging as the main beneficiary.

The Trump administration announcement that it aims to speed deployment of self-driving vehicles by exempting some from certain safety requirements and easing rules requiring reporting of safety incidents sent Tesla shares up nearly 10% on Friday.

In a surprise move, President Trump’s transportation department has decided to keep the Biden-era rule requiring automakers and tech companies to report crashes that involve fully or partially autonomous vehicles. But they’re making a few changes that are likely to have a big impact on one company.