The lateral security of heavy vehicle in deteriorative weather is one of the main causes of accidents of vehicles
on roads. Road safety has become a subject of great concern to institutions of higher education and scientific research
institutions. There are important theoretical and practical significances to explore applicable and effective lateral safety
warning methods of heavy vehicles. One of the purposes of this paper is to provide a good theoretical basis for the core
technology of heavy vehicle safety features for our country's independent research and development. Aiming at the issue
of lateral security of heavy vehicle for road conditions in deteriorative weather, this paper constructs the framework of the
lateral security pre-warning system of heavy vehicles based on cooperative vehicle infrastructure. Moreover, it establishes
vehicle lateral security statics model through analysis of the force of the car in the slope with section bending and states
the parameters of vehicles for no rollover. The side slip is indexed to calculate critical speed of vehicles in a bend. This
paper also analyzes the influence of road friction coefficient, the road gradient and the turning radius on the lateral
security of the vehicle with critical speed on the asphalt pavement with surface conditions ranging from wet, dry, snowing
or icy. The calculation results show that the bad weather road conditions, road friction coefficient and turning radius have
obvious influence on the lateral security critical speed. Experimental results indicate that the critical speed error warning
is within 4% and it meets the design requirements.
Handling Enhancement of Autonomous Emergency Steering for Reduced Road Friction Using Steering and Differential Braking