A trunk road is a strategic road built specifically for freight transportation alongside the roads used for personal transport, in this case built by the government. For the purpose of this essay, I shall consider a benefit to be either the prevention or reduction in the number of negative externalities produced by trucks and cars sharing the same road and also the economic benefits felt by both households and firms.
The largest benefit arising is the reduction of congestion on normal roads. This benefits normal road users, firms who use trunk roads and the government.
Normal road users are able to get where they want to go faster because of less trucks on the road. This also means there is less starting and stopping on longer routes, and therefore less fuel is wasted. This means road users have to refuel less often, and given the current rise in fuel prices, this makes driving less expensive. However, another benefit arising from this is a slight reduction in environmental damage: less starting and stopping leads to a reduction in the emissions of carbon dioxide from both cars and Lorries. This is good for the environment because less emissions means less greenhouse gasses being emitted into the atmosphere, and this ultimately reduces the amount to global warming on Earth. This is desirable such warming would cause damage to fragile ecosystems and will eventually drive many species to extinction.
Further, such a construction project would make firms transportation far more efficient for the same reasons: there is less standstill and slow-moving traffic, allowing goods to be delivered to their destination faster. This would raise the productivity of such firms, and therefore lower their costs of production. This raise in productivity for firms using such transport routes would result in them being able to produce a higher final output (as cost of production, including