This paper studies the role of workplace parking policies and illustrates it for the Barcelona agglomeration. We adapt the Brueckner and Franco (2018) analytical model for Western European cities by adding agglomeration externalities, public transport congestion and underground parking. Workers can choose to locate in the city centre or in the suburbs. Commuting to the city centre requires either commuting by car and parking or public transport. Two policies to address inefficiencies of employer-paid parking are compared: employee-paid parking and a workplace parking levy. It is shown how employee-paid parking generates additional agglomeration economies, while a workplace parking levy may have opposite effects. The numerical illustration for Barcelona indicates that the welfare effects of workplace parking policies in a second-best setting are dominated by agglomeration effects. These are three times larger than the welfare changes in the transport and land use markets.

本文研究了工作场所停车政策的作用，并说明了其在巴塞罗那城市群中的作用。我们通过增加集聚外部性，公共交通拥堵和地下停车场，将Brueckner和Franco（2018）的分析模型应用于西欧城市。工人可以选择在市中心或郊区。到市中心上下班需要开车，停车或乘坐公共交通工具上下班。比较了两种解决雇主支付停车效率低下的政策：雇员支付停车和工作场所停车费。它显示了员工付费停车如何产生额外的集聚经济，而工作场所停车税可能产生相反的效果。巴塞罗那的数字说明表明，在第二好的环境中，工作场所停车政策的福利效应主要是集聚效应。这是运输和土地使用市场中福利变化的三倍。