Parking occupancy sensors are devices that assist search of vacant parking. The interplay between two government policies, installation of sensors and pricing parking, is studied. When parking is congested and the uniform price is optimal, installation of sensors raises the price, increases turnover of parking. If price discrimination is considered, sensored parking should be cheaper than non-sensored. To achieve optimal search of vacant parking, it is sufficient to equip only a fraction of parking with sensors. Underpriced parking may dampen the sensor installation incentive, relative to the incentive to build extra parking. Nevertheless, in absolute terms the sensor installation incentive is substantial even with free parking.

停车占用传感器是辅助搜索空闲停车的设备。研究了两个政府政策，传感器的安装和价格停车之间的相互作用。当停车拥堵且统一价格最优时，安装传感器会提高价格，增加停车周转率。如果考虑价格歧视，则有感停车应比无感停车便宜。为了对空置停车位进行最佳搜索，仅在一部分停车位上安装传感器就足够了。相对于建造额外停车位的激励措施，低价停车位可能会削弱传感器安装的激励作用。然而，从绝对意义上讲，即使免费停车，传感器的安装动机还是很大的。