Generally, European trains still stop at borders to change locomotives and staff. This is often necessary. The German and French voltage systems are incompatible. Spain — though not Portugal — has a broad gauge track. English bridges are lower than elsewhere, and passengers on German trains would need a ladder to reach French platforms, twice as high as their own. But those physical constraints pale in comparison to an even more formidable barrier — national chauvinism. While officials in Brussels strive for an integrated and efficiently run rail network to relieve the Continent’s gorged roads and airways, and cut down on pollution, three member countries —France, Germany and Italy—are working feverishly to develop their own expensive and mutually incompatible high-speed trains.

Précis

European trains stop at borders due to different hurdles; incompatible voltage system, broad gauge, zigzag platform and above all nationalism. Now these countries are trying to develop an environment friendly rail network which connects Europe.

Practice make a person perfect. Keep on practicing.

Your current precis is needs lot of improvements. You make just two sentences, try to use smaller sentences. Your precis is not an exact account of the original. Trains stopped at the borders not due to hurdles but for necessary transitions.

Your effort is good. keep trying.

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“There is no God but You (Allah Almighty), You are far exalted and above all weaknesses, and I was indeed the wrongdoer”. AL-QURAN