The present application relates to a kind of highway reconstruction period S type switching length calculation and dynamic
speed limit control method, belong to intelligent transportation field.The method includes a set of
data acquisition facilities and field information release facilities are set in switching place before and after and upstream, obtain each lane
traffic flow data and release lane level dynamic
speed limit control strategy;A set of
road surface environment detection facilities are set in switching place, obtain each lane
road surface environment condition and real-time
friction coefficient;Input switching place and upstream and downstream road alignment condition and future each time period predicted
traffic flow data, utilize
simulation software to simulate and compare the traffic operating conditions when different
speed limit values are used in switching, determine the initial speed
limit value of switching place;Input switching place and upstream and downstream road alignment condition and initial speed
limit value, utilize switching opening length calculation method, output opening length design value, calculate the
design speed limit value of switching place;Real-time lane level
road surface friction coefficient or traffic emergency is combined, and the speed limit value of S type switching place is dynamically adjusted.