Complex sentence: Motorcycles and other vehicles with 2 wheels or less were initialle banned from using this highway due to safety reasons; however, the ban on motorcycles has been lifted since 19 June 2008 due to escalating fuel price.
Split into simpler sentences: Motorcycles and other vehicles with 2 wheels or less are not allowed on this highway due to safety reasons. The ban on motorcycles has been lifted since 19 June 2008 due to escalating fuel price.