Appendix C 3.2 Traffic Data
Traffic is estimated to be 300 AADT, with 12% heavy vehicles consisting of:
- standard heavy vehicles = 10% (HV)
- large heavy vehicles = 2% (LHV).
The road section is two-lane, two-way, with an even split of traffic in each direction, thus the design traffic is 300/2 = 150 v/l/d. While the seal width is only 6.8 m wide, the traffic lanes are not considered to be narrow enough to cause channelisation, and traffic conditions are considered to be 'normal'.
Therefore, using Equation 2 (Section 5.2.5), EHV (%) can be calculated:
| EHV (%) | = | SHV(%) + (LHV(%) x 3) |
| = | (10) + (2 x 3) | |
| = | 16%. |