Toll for vehicles on the Mumbai-Pune Expressway, the first access-controlled road of the country, will increase by 18 per cent from April 1, officials of the Maharashtra State Road Development Corporation (MSRDC) said.

A senior MSRDC official said on Tuesday that though the toll increases by six per cent annually, it is implemented cumulatively at 18 per cent after every three years, as laid down in a government notification of August 9, 2004.