Crime levels are low although there is some petty crime. Pick pocketing can be a problem in the major cities when tourists are targeted for passports and cash.
Sweden deals with its harsh weather very well, but delayed trains and flights are difficult to avoid during severe weather conditions. Snow and ice on the roads cause accidents daily. Consider starting your journey earlier to avoid rushing to your destination. Be prepared for harsh conditions particularly in the north during the winter.
From 1 December - 31 March (irrespective of weather conditions) Swedish registered cars are required by law to have either studded tyres or un-studded friction tyres bearing the following mark, M+S, M-s, M.S, M&S, MS or Mud and Snow.
Although foreign registered cars are exempt from this requirement, it is still advisable to have winter tyres fitted.
In 2012 there were 286 road deaths in Sweden (source DfT). This equates to 3.0 road deaths per 100,000 of population and compares to the UK average of 2.8 road deaths per 100,000 of population in 2012.
See the European Commission, AA and RAC guides on driving in Sweden.
You can find information about rail travel on the website of the Swedish train operator SJ.
You should check carefully whether any offers of employment for asphalting or seasonal work are genuine. Contact the British Embassy in Stockholm for further advice if necessary.