Sags are roadway sections along which the gradient increases gradually in the direction of
traffic. Sags are generally bottlenecks in freeway networks. Previous research suggests that …

Speed and speed variation are widely believed to be key issues in the understanding of
traffic accidents. However, there has not been a substantial amount of research that focuses …

Traffic operation quality of road network plays a vital role in urban planning and sustainable
development. In this work, taking Kunming City, China as an example, the road traffic speed …

Road geometry (eg slope and curvature) has significant impacts on driving behaviours of
low-level automated vehicles (AVs), but it has been largely ignored in microscopic traffic …

Anticipative driving of vehicles, considering the microscopic dynamics of the preceding
traffic, can bring great improvement in the traffic flows in a connected vehicle environment …

Sag is a road section where a downhill changes into an uphill, and is a highway bottleneck.
We consider a system in which all vehicles are connected, and run on a single-lane road …

Sags are bottlenecks in freeway networks. According to previous research, the main cause
is that most drivers do not accelerate enough at sags. Consequently, they keep longer …

Adaptive Cruise Control (ACC) can reduce traffic congestion and accidents. In dense traffic
flow conditions and when changing lanes, drivers prefer to deactivate the ACC. These …

The cross-river tunnel is an important facility for modern cities. It is usually a natural
bottleneck due to the changes in gradient, which is known as sag. Once a queue propagates …

Sags and tunnels are major bottlenecks, where the road capacity is reduced, and the
“capacity drop” phenomenon occurs; however, there is no simple model or theory that can …