Camera-based enforcement on the Delhi-Mumbai Expressway is being expanded to issue automatic e-challans for sudden lane changes. The stated aim is to reduce dangerous movements by fast-moving vehicles, particularly heavy commercial traffic.
The reported speed limits vary by lane: the third and fourth lanes allow up to 120 kmph, the second lane up to 100 kmph and the first lane up to 80 kmph. A vehicle moving abruptly between those speeds can leave following drivers too little time to brake.
Software has been updated on the Rajasthan and Haryana sections. Cameras are installed every two kilometres, with each system monitoring about 500 metres ahead and behind. Wrong-way driving and parking outside designated areas can also attract fines.
Officials expect the system to help on the Haryana stretch, including Mewat, where accidents have been a concern. Heavy vehicles shifting suddenly from the first lane to faster lanes are identified as a recurring risk.
Automation cannot replace road design, clear signs or responsible driving, but consistent enforcement can make lane discipline more visible. The test will be whether fines reduce dangerous behaviour without creating confusion about speed limits.