Lagos state is the commercial and financial capital of Nigeria. It is a coastal city with a population of 12 million and covers 2000 square kilometers. The road network extends over 2700 km with a vehicle density of 740 vehicles per kilometer. It consumes over 85% of petroleum products imported into the country. It has no rail or sea mass transit system and all movements of people and goods are by road. This has created a major traffic Management challenge and government intervention is the establishment of the Lagos State Traffic Management Authority( LASTMA). To understand the structure, strength, and weaknesses of the authority, the enabling law and accident statistics, were obtained from the Authority, the Nigerian Police, and the Federal Road Safety Commission. Questionnaires were administered to drivers unions and the general public. The results were analyzed and it was discovered that conflicts across agencies, corruption and high handedness exist. It was also established that the authority has to a great extent succeeded in improving orderliness on Lagos roads. LASTMA needs to pursue an aggressive public enlightenment to change driver’s behaviors.