Over 42,000 people die each year on our nation’s highways. Countless more suffer significant injuries and permanent disabilities as a result of vehicle collisions. The level at which our roads are designed, constructed and maintained can and does make a considerable difference. McMahon offers our clients a full compliment of trained professional staff cognizant of the latest traffic engineering and design standards and utilizes the latest technology to review and analyze any safety issue. We have the knowledge and experience needed to establish to most reasonable and responsible course of action for those sensitive situations that both public agencies and private entities experience in on a regular basis.
Road Safety Audits
The FHWA defines a Road Safety Audit (RSA) as a formal safety performance examination of an existing or future road or intersection by an independent team. McMahon can conduct a RSA on any road segment ranging from local residential streets to interstate highways. McMahon’s professional staff was instrumental in the Pilot RSA projects that took place in Pennsylvania in 1996-97 and New Jersey in 2004. Our staff has been certified in accident investigation and reconstruction, motorcycle collision reconstruction and human factors in vehicle collisions.
Road Safety Analysis
McMahon can perform a road safety study at any level desired to evaluate any road segment or intersection. We examine crash data to identify trends and correlate those trends to road conditions and geometric configurations. Crash data can be plotted on a diagram to identify specific crash patterns at specific locations. McMahon safety studies typically produce recommendations to address the existing conditions and reduce the probability of future crashes.
Traffic Control Analysis
McMahon can evaluate any road segment or intersection to identify the most appropriate traffic controls, including, but not limited to: traffic control signals, stop signs, yield signs, school warning flashers, speed limits, one way streets, turn restrictions, flashing warning devices, as well as traffic calming techniques such as: roundabouts, speed bumps, speed tables and chicanes.
Sight Distance Analysis
McMahon can measure and evaluate existing intersection and stopping sight distances as well as estimate the future sight distances that will be available for proposed intersections and road segments. The staff at McMahon is proficient in the application of the current ASSHTO and State DOT standards and guidelines relative to minimum and desirable stopping sight distances and the significance of each variable that makes up those standards and guidelines. Our professionals can help you evaluate those situations involving the unusual conditions that are so often encountered on existing facilities.
Traffic Management Plans & Work Zone Safety
McMahon can prepare detailed Work Zone Traffic Control (WZTC) plans for the most complex roadway construction situations. The professional staff at McMahon has vast experience evaluating and designing the reconstruction of our nations aging infrastructure while maintaining safe and convenient traffic flow. Our WZTC plans provide a safe balance between the needs of mobility within the limited public right-of-way with the need to provide access to existing properties while also maintaining the highest level of safety to both the highway workers and motoring public.
Expert Witness Testimony
McMahon provides professional services to Attorneys to aid in the defense of Municipal and State Governments for claims relative to the design, construction and maintenance of their road systems. McMahon staff is very well versed at the standards and guidelines that apply to road design, construction and maintenance. The professionals at McMahon can advise the defense team on the relevance that the allegations may or may not have with the causation factors of the crash in question. McMahon has provided services on cases ranging from multiple vehicle interstate highway collisions to single vehicle run off the road, to pedestrian trip and fall incidents. Our staff has been certified in accident investigation and reconstruction, motorcycle collision reconstruction and human factors in vehicle collisions.