Slow moving traffic and recurrent traffic jams on Highway 110 between Beijing and Inner Mongolia result from an overload of coal trucks transporting coal from newly opened mines in Inner Mongolia to sea ports on the coast of China. Rail lines are under construction which would relieve the bottleneck but will not be completed until 2012 at the earliest.
China National Highway 112 runs around Beijing
Before 2013, Mainland China observed National Highway 228 as Taiwan Ring, composed of several National Expressway (Republic of China) and Taiwan provincial highways, this designation is not recognized by Republic of China(Taiwan). This observation was eventually dropped in new National Highway plans, replaced by Dandong-Dongxing Highway.
A extension plan of the highway system was announced in 2013, including extension of existing highways(101-112, 201-227, 301-330) and new highways(North-South 228-248, East-West 331-361, Connections 501-581). Only small portions of them needs to be constructed from scratch; most of the new highways would be upgraded provincial/county highways.