cleaned 'nimi' column for roads. made Ä and Ö characters to be displayed properly. did also some other changes like renamed KEHÄ III to KEHÄ 3 and V. PORVOONTIE to VANHA PORVOONTIE
cleaned 'nimi' column for roads. made Ä and Ö characters to be displayed properly. did also some other changes like renamed KEHÄ III to KEHÄ 3 and V. PORVOONTIE to VANHA PORVOONTIE

IntroDS2017/TrafficAccidents,IntroDS2017/TrafficAccidents,IntroDS2017/TrafficAccidents