WATERWAY SYSTEMS TRAFFIC ANALYSIS

The purpose of the Chicago River and Lock system analysis was (i) to describe and analyze the traffic conditions existing on the waterway system, including traffic conflicts; (ii) to project the probable future traffic volume growth; (iii) to determine the capacity of the system by applying a queuing model; (iv) to characterize existing and future traffic conflicts; and (v) to identify potential solutions to reduce conflicts in the future. Several methods were used to accomplish these objectives: detailed traffic data were collected from lockage reports at the Chicago Lock; forecasts based on historical trends were projected; several tour-boat companies, barge operators, recreational boaters, and representatives of government agencies who were directly involved with the Chicago River and Lock were interviewed; several days were spent directly observing the lock operations and river traffic; accident data and conflict information were analyzed; a level of service concept coupled with a capacity study was developed; and finally, a queuing analysis of the lock operation was performed to estimate average delays to users of the lock. Based on these analyses, the following recommendations were made: (i) restrict new tour-boat companies; (ii) emphasize and enforce "no wake" zones; (iii) emphasize and enforce certification of boaters; (iv) increase law enforcement patrols in the study area and enforce tough anti-alcohol/drug boating laws; (v) make available to all users the rules for lock usage; and (vi) display proper signs for user information.