The study comes after the South West 7.02am and 7.32am trains have made the top 10 busiest in England and Wales.
Plans for the cross-London line currently take in Shepperton, Epsom, Hampton Court, Chessington South and Surbiton stations on its southern tip.
If the proposed ideas go ahead:
– Stretching the line from Surbiton to Woking would cut journey times by up to six minutes, at less well-served stations on the route like West Byfleet, Weybridge and Walton-on-Thames
– Up to 17 minutes would be cut from a journey to central London if the Epsom line is extended to Dorking
– Overcrowding would be cut by freeing up space on the South West Mainline tracks for up to seven extra trains an hour.
Surrey County Council’s deputy leader Peter Martin said: “Crossrail 2 is vital for commuters and businesses.
“Not only will the planned railway reduce overcrowding, it will boost the economy in Surrey, London and way beyond.”