Complex sentence: Enforcement of traffic lights varies from jurisdiction to jurisdiction; some places are extremely strict, while other locales are known for traffic lights being routinely ignored by motorists, with no serious attempts by law enforcement to alter the situation.
Split into simpler sentences: Enforcement of traffic lights varies from jurisdiction to jurisdiction; some places are extremely strict. Other locales are infamous for traffic lights being routinely ignored by motorists, with no serious attempts by law enforcement to alter the situation.