The following information was recorded for a highway two years ago. Since then, the traffic has increased by 15% per year and the % heavy vehicles has doubled each year. (4+2+2+1) Total vehicle counts 4000 Busses 0.355% Trucks 1.20% Terrain factors: 1.70 for trucks and 1.5 for busses Attach or type all workings. Marks allocated accordingly.