The Hong Kong University of Science and Technology (HKUST) set up a joint research laboratory with the Mass Transit Railway (MTR), i.e., the HKUST-MTR Joint Lab, on low-carbon smart city development. We are inviting research proposals on three main topics for the coming year, as detailed below: (a) Automatic identification of unsafe behaviours in construction sites, (b) Enhancement of safety monitoring in construction sites by adopting advanced wireless communication and IoT technologies, and (c) Development of an internal carbon pricing mechanism for carbon reduction initiatives. The selected project teams will work closely with MTR on real case studies with data and technical advice/support to be provided by MTR.