Leidschendam is served by highways A4 and A12, which connect to all other areas of the country and international destinations. A number of nearby train stations connect directly to The Hague, Rotterdam and Leiden, with easy access to the rest of the country. Two tram lines connect to local destinations: No. 2 to Kraayenstein in The Hague, and No. 6 to De Uithof in The Hague. There is local and regional bus service. Overall, connectivity is best to downtown The Hague, especially since the beginning of the 21st century when the Noordelijke Randweg was completed, a regional road linking the A4 motorway to parts of The Hague, passing through Leidschendam.