The purpose of this paper is to test a recently proposed model of road classification for use by provincial highway agencies. The proposed model to be tested is intended to classify roads according to temporal volume variations, road use characteristics, such as trip purpose, and trip length distribution. The proposed model, which was developed by using Alberta highways data, is applied to Saskatchewan highways to evaluate its classification results. For the purpose of this study, a total of 31 permanent automatic traffic recorder sites in Saskatchewan is investigated. The application of the model to Saskatchewan highways results in six main groups according to the trip purpose and trip length distribution characteristics. The paper defines and discusses these classes in detail and compares them with the existing classification of Saskatchewan highways. The model produces similar road classes for Alberta and Saskatchewan highways. The similarity of road classes for the two provinces has implications for a standard classification of provincial highways.Key words: highway classification, road use, traffic, transportation, traffic volume patterns.