On 23.02.2021 Germany has decided to extend all restrictions related to entering the country from the Czech Republic, Slovakia and Austrian Tirol until 03.03.2021
This means that all difficulties currently experienced at the border crossings will continue for at least another week.
Keep in mind, that in order to enter Germany from countries recognized as an area with new Sars-Cov-2 virus variant, a COVID-19 negative test result, no older than 72 hours, must be presented at the border. There is no exception to this rule for heavy transport workers. Also, you must register in the German system: http://www.einreiseanmeldung.de