KOCHI: The Kochi Metro Rail Limited (KMRL), buoyed by the state government nod to execute the light metro in Thiruvananthapuram and Kozhikode, has begun the preparatory work for detailed project reports (DPR). While the Union government’s approval is awaited, KMRL Managing Director Loknath Behera told reporters on Friday that the DPR will be ready in eight to ten months, if everything goes as planned.