the ratio of the distance traveled (in kilometers) to the time spent traveling (in hours)

kilometres per hour.

Acronym for " kilometer per hour." Speeds in Canada and Europe are posted in kph. To convert kph to mph, divide by 1.609344. Thus 50 kph is about 30 mph; 70 kph is 44 mph; 90 kph is 56 mph; 100 kph is 62 mph; 110 kph is 68 mph. Maximum speed in Canada on its freeways is 110 kph. Also abbreviated "km/h"

kilometers per hour