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1. GENERAL RULES 1.0.1 In order to unify technical standard of highway engineering, we formulate these rules. 1.0.2 These rules are suitable to the newly-established and on-going expanded highway construction. 1.0.3 Based on road functions and suitable transportation capacity, highway can be classified into the following five classes: 1. Expressway is multi-lanes highway that is specially used for the totally control of entry & exit of vehicles in the different lanes & directions. Based on consideration of converting all kinds of vehicles into small-size passenger bus as standard vehicle size, average daily transportation volumes for a whole year on four-lanes expressway are 25,000 – 55,000 vehicles; Based on consideration of converting all kinds of vehicles into small-size passenger bus as standard vehicle size, average daily transportation volumes for a whole year on six-lanes expressway are 45,000 – 80,000 vehicles; Based on consideration of converting all kinds of vehicles into small-size passenger bus as standard vehicle size, average daily transportation volumes for a whole year on eight-lanes expressway are 60,000 – 100,000 vehicles; 2. Class I highway is multi-lanes highway that is specially used for the control of entry & exit of vehicles in the different lanes & directions based on the needs. Based on consideration of converting all kinds of vehicles into small-size passenger bus as standard vehicle size, average daily transportation volumes for a whole year on four-lanes Class I highway are 15,000 – 30,000 vehicles; Based on consideration of converting all kinds of vehicles into small-size passenger bus as standard vehicle size, average daily transportation volumes for a whole year on six-lanes Class I highway are 25,000 – 55,000 vehicles; |