Shah Alam is generally considered safe for solo female travelers. The locals are typically welcoming and respectful. Street crime is not a common occurrence, but like anywhere else in the world, general caution should be taken. It is advisable to avoid walking alone at night especially in less crowded areas. Consider using reputable taxi companies or ride-sharing apps for transportation and staying at accommodations with good security measures. Overall, behave with the same level of caution as you would in any other foreign place to ensure a pleasant and safe experience.