The Economics of Vacations – Info Decision Make

Perhaps you’ll decide to drive to your destination. You probably didn’t know that the gas stations you will pass reveal an interesting economic lesson about demand shocks.  Demand shocks represent a sudden rise or drop in consumers’ desire to purchase a good or service. Empirical evidence of how companies and industries respond to demand shocks is hard to come by in large part because shocks, such as a particularly effective advertising campaign, happen everywhere at once.

Studying demand shocks to gas stations during the construction of the interstate highway system was useful because “they’re observable many times over many years in many regions,” Hubbard says.  He combined government data on gas stations with data on when every mile of the interstate opened. He also poured over old maps to figure out what the best route was between two cities in the 1950s, before the interstate arrived, then measured how far that route was from the new interstate.

Hubbard found that when interstates were built close to existing roads, gas stations responded to the increased demand by expanding in size and hiring more employees, but few additional stations were built. When a new interstate opened several miles or more from the previous highway, entirely new gas stations opened up to service the demand, but the size of existing stations stayed the same.  The results suggest that entry opportunities in expanding markets are not as simple to exploit as they might seem.