Travel Documents U.S. citizens travelling to Canada by air, land or water must present a valid passport or other document that meets the requirements of the Western Hemisphere Travel Initiative in order to re-enter the United States. U.S. children under the age of 16 who are crossing the border by land or water may present a birth certificate or other proof of citizenship. For more information on the Western Hemisphere Travel Initiative, visit the U.S. Department of State website: http://travel.state.gov/travel/cis_pa_tw/cis_pa_tw_2223.html
Driving in Canada Canadian road signs show distances in kilometres and speeds in kilometres per hour. A kilometre is 0.62 of a mile. 100 km/h = 62 m.p.h. 50 km/h = 31 m.p.h. Radar detectors are illegal in Ontario.