This study proposes a solution to the problem of limited network sensor coverage caused by insufficient sample size of probe vehicles.A framework is developed that estimates link travel times using available data from neighbouring links.The proposed framework was validated using field data from Vancouver, BC.The travel time estimation accuracy was found comparable to the existing literature.To analyze the impact of the probessample size on the accuracy of the proposed methodology, a case study was undertaken using a VISSIM micro-simulation model of downtown Vancouver.The...