Influence of varied parking tariffs on parking occupancy levels by trip purpose

The potential impact of parking-pricing on trip generation and modal choice is gaining greater acknowledgement within transport demand management research. However, although the aggregate effect of a transport demand management pricing measure is often noted or estimated, the potential varied impact of pricing measures on specific subsets of the market are often overlooked in the policy process. The variance of price impacts on different trip purposes, initially, and as tariffs increase progressively, is an important consideration for policy makers. Using the results from a survey on 1007 on-street parkers in Dublin, Ireland, this paper shows a progressively widening gap in price sensitivity between trips made for business purposes relative to non-business purposes, as the suggested parking pricing scenarios are increased. The results highlight the complication that the varied price sensitivity of particular market subsets can bring to development of a pricing policy and warns of threshold points where the gap between the price responsiveness of specific market subsets become considerably more pronounced.