Presently, traffic situation in Port Harcourt metropolis can best be described as chaotic while efforts by previous and current administrations to curb the menace of abandoned broken down vehicles have remained elusive. This paper examined the impact of abandoned broken down vehicles on road users in Port Harcourt metropolis in particular and Nigeria in general. Related literatures on broken down vehicles were reviewed while primary data for the study were obtained by means of structured questionnaire and interviews. Simple random sampling technique was used to select the elements of the study while statistical tools like non-parametric chi-square test, percentages and simple tabular analysis were employed in the analysis of data. The inquiry revealed that there is no statistically significant difference between abandoned broken down vehicles and movement of residents. However, factors contributing to abandoned vehicles were given as the cost of operating and disposing of vehicles, cost and convenience of legitimate disposal, cost of repair and insurance, delay in toying of the vehicles by relevant Agencies and operators' neglect. The study further showed that abandoned vehicles contributed to increase in crime rate, accidents and traffic jams. Based on the findings, the creation of necessary awareness by the ministry of transport on the need to clear the roads, junking of vehicles that exceeds the approved duration of the Road Safety Act (2007) and National Road Traffic Regulations (2014), resuscitating the moribund transport Agency (TIMA-RIV) in the state as well as using GIS and remote sensing techniques to monitor abandoned broken down vehicles were strongly recommended.