Travel time estimation based on intelligent vehicle infrastructure cooperation system

The paper proposed a travel time estimation (TTE) method based on the intelligent vehicle infrastructure cooperation system (IVICS), a new generation of intelligent transportation system (ITS) based on inter vehicle and road-vehicle communication, utilizing the vehicle information gathered by vehicles which equipped with communication module in IVICS. A simulation platform of IVICS was set up using the traffic simulation software Paramics, database software MySQL and mathematical software MALAB. The TTE method was applied and validated on the platform and good results were achieved. The proposed TTE method was also validated with the NGSIM data and precise estimation were achieved: The MAPE can reach to approximately 7% when the equipped proportion is 0.2 and time interval of information collecting is 30 s. The influence of equipped proportion and time granularity is considered and the conclusion is that when equipped proportion increased or time granularity decreased, the accuracy of the estimation can be improved, but at the same time, the cost increased.