California Traffic Network Datasets: METR-LA, PEMS-BAY, PEMS04 and PEMS08 for Traffic Speed and Flow Analysis

This dataset compilation brings together four significant traffic network datasets from California's transportation monitoring systems: METR-LA, PEMS-BAY, PEMS04, and PEMS08. The METR-LA dataset is collected from the traffic monitoring system in the Los Angeles area and records detailed traffic speed data. The PEMS-BAY, PEMS04, and PEMS08 datasets originate from the California Department of Transportation (Caltrans) Performance Measurement System, with PEMS-BAY recording traffic speed data, while PEMS04 and PEMS08 record traffic flow data. These datasets provide valuable empirical foundations for traffic prediction, pattern recognition, and intelligent transportation system research, applicable to developing advanced traffic management strategies, congestion prediction models, and smart travel planning systems. Researchers can utilize these datasets for developing and validating methods in spatiotemporal data mining, deep learning, and graph neural networks.