Overall, Portugal is a very safe country to travel - the crime rates are low and the police are trustworthy. The general emergency number in Portugal, like elsewhere in the European Union, is 112.
Overall, Portugal's driving culture is quite relaxed, and while Portugal, like most places, does have its share of reckless drivers, it's nothing that you should especially worry about. There are a few mountain ranges in Portugal where you'll find some steep and narrow roads where you have to be extra cautious, but the Portuguese mountains are considerably lower than, say, the Alps, Pyrenees, or the Sierra Nevada in Southern Spain, so even drivers with no prior experience with driving in the mountains usually manage it well. Furthermore, the highest elevation in Portugal can be found in the interior parts of the country, far from most of the tourist attractions. The highest point of continental Portugal, Torre of Serra de Estrela, stands at 1,993 m (6,539 ft).
Pickpocketing and other petty crimes occur in Lisbon, Porto, and elsewhere in the country, especially near popular tourist attractions. Keep your belongings close and do not hesitate to ask for help if you need it!
During the last decade, forest fires have become a serious issue in Portugal, particularly in the inland and southern parts of the country. Often starting at eucalyptus plantations which are highly prone to wildfire during the hottest months of the year, the fires have destroyed a significant amount of farmland and entire villages. Although there are many watchtowers and the response is usually swift, wildfires can spread at terrifying speed. If you're visiting Portugal any time from April to October and plan to travel away from cities and especially to inland areas, make sure to get the latest wildfire forecast
and follow the news of the area that you are visiting.