Park & Ride Demand Forecasting at Tiantongyuan Area along Beijing Subway Line Five

Concerning the unbalanced demand and supply of Park Ride facilities at Tiantongyuan North Station along Line Five of Beijing Subway,this paper investigates how to estimate the demand for Park Ride facilities at the station and how to solve the problem of insufficient parking space.By analyzing the parking time,the origin of Park Ride vehicles and facilities supply at Tiantongyuan area,the paper applies a Logit model to estimate a peak hour demand of 1476 vehicles for Park Ride facilities within the area that excesses the planned capacity of Park Ride facilities.To solve the problem,the paper proposes to construct another new Park Ride lot at Lishuiqiao station where traffic bottlenecks frequently occur.A systematic equilibrium model is also developed by the study to assign the Park Ride demand at Tiantongyuan area.The results show that the Park Ride demand is assigned basically according to the scale of the two parking lots.Therefore,the paper suggests to increase parking capacity in the vicinity of Tiantongyuan North Station while reducing the parking spaces at the newly-built parking lots so as to minimize the vehicles entering congested segment and to relief road congestion.