Sadiq Khan calls for cap on numbers of robotaxis on London streets
Real-world example for IB, A-Level, AP and IGCSE Economics essays: Externalities and the environment, Taxes, subsidies and price controls, Unemployment and the labour market
What happened
London's mayor, Sadiq Khan, has called for a cap on the number of robotaxis on the city's streets, as the UK government is about to allow fully driverless vehicles to operate in the capital.
The economics
Robotaxis can create negative externalities: more vehicles on the road worsen air quality and congestion, and these costs fall on the whole city rather than on the operators, so they are not reflected in private costs. A cap is a form of direct government intervention that limits the externality instead of leaving it to the market. The shift to driverless vehicles also raises labour-market questions about jobs.
Evaluation
A cap directly limits vehicle numbers but may curb the efficiency gains from competition and innovation; the scale of congestion and pollution also depends on whether the vehicles are electric and whether they replace private car trips, so a cap alone may not be the most effective tool.
Practice question
Using the example of London's proposed cap on robotaxis, discuss how governments should address the negative externalities of new technology, and evaluate quantity controls versus market-based approaches.
Where it fits in the syllabus
- Externalities and the environment: Costs or benefits that fall on third parties without being priced, such as pollution and carbon emissions.
- Taxes, subsidies and price controls: Indirect taxes, subsidies and maximum or minimum prices that governments use to change market outcomes.
- Unemployment and the labour market: People willing to work who cannot find a job; it can be cyclical, structural or frictional.
- IB Economics: Government Intervention and Market Failure, Measuring Economic Activity, Aggregate Demand and Supply
- A-Level Economics: Market Failure, Government Microeconomic Intervention, Macroeconomic Objectives
- AP Macroeconomics: Economic Indicators and Business Cycle
- AP Microeconomics: Market Failure and the Role of Government, Supply, Demand and Market Equilibrium, Factor Markets and Income Distribution
- IGCSE Economics: Government Intervention, Macroeconomic Objectives