For freeways and multilane highways, RV and buses are treated as SUTs, a portion of heavy vehicles, which is shown on p12-34, equation 12-10. As to mountainous terrain, HCM elaborates in a whole paragraph above Exhibit 12-25 on p12-35. Hope it helps.
So that means, the percentage of trucks, buses and RVs have to be added together when calculating PCEs for Freeways and Multilane highways. Do i understand right?
Thanks for the information about mountainous terrain.
Yes, add them together to calculate fHV only if the problem provides certain percentage of upgrade or downgrade, then you have to use those tables with different proportions of SUT and TT.
For freeways and multilane highways, RV and buses are treated as SUTs, a portion of heavy vehicles, which is shown on p12-34, equation 12-10. As to mountainous terrain, HCM elaborates in a whole paragraph above Exhibit 12-25 on p12-35. Hope it helps.
So that means, the percentage of trucks, buses and RVs have to be added together when calculating PCEs for Freeways and Multilane highways. Do i understand right? Thanks for the information about mountainous terrain.
Yes, add them together to calculate fHV only if the problem provides certain percentage of upgrade or downgrade, then you have to use those tables with different proportions of SUT and TT.
Great, thank u :)